Are you ageing well? Take the five-part quiz that could help change your future

Source: The Conversation – UK – By Jitka Vseteckova, Senior Lecturer Health and Social Care, The Open University

Sabrina Bracher/Shutterstock

Most of us want to enjoy later life feeling strong, connected, and mentally sharp. But how often do we stop to think about whether the things we’re doing right now are helping us get there?

A new quiz – which we have developed as part of the Take Five to Age Well project, a free, expert-led, month-long challenge from The Open University and Age UK – makes it easier, and more empowering, to ask that question, reflect and take action.

Healthy ageing doesn’t depend on just one thing. Research shows that our long-term wellbeing is shaped by a mix of physical, mental and social factors. That’s why experts, including us, have identified five key areas – known as the Five Pillars for Ageing Well – that form a strong foundation for staying well and thriving in later life:




Read more:
You can’t reverse the ageing process but these 5 things can help you live longer


1. Are you eating well?

Are you getting enough fruit and vegetables, limiting ultra-processed foods and meeting your body’s changing nutritional needs? Diets like the Mediterranean plan are linked with a lower risk of dementia and other chronic conditions.

Malnutrition is a serious concern in older age, especially when it comes to maintaining strong muscles and bones.

2. Are you staying hydrated?

Are you drinking enough water to support both your brain and body? Dehydration can creep up easily and affect cognitive function, mood and energy.

Cutting down on sugary drinks can help you to maintain a healthy weight and staying within recommended alcohol limits can also help lower your risk of conditions like dementia. Hydration really matters.

For people with life-limiting illnesses or conditions such as advanced dementia, where appetite and oral intake may be severely reduced, sugary drinks may be one of the few sources of calories they can tolerate. In these cases, hydration and comfort take priority over strict nutritional guidelines, and personalised care plans should always guide decisions.

3. Are you being physically active?

Are you moving regularly? Enough to raise your heart rate? Are you breaking up long periods of sitting with movement?




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A sedentary lifestyle is linked to a wide range of health risks. Simple habits like walking more can boost physical fitness, sharpen the mind and help prevent osteoporosis, especially when paired with good nutrition.

4. Are you connecting socially?

Are you keeping in touch with others, spending time in your community and enjoying meaningful connection? Loneliness increases the risk of depression and cognitive decline.

Building strong social ties earlier in life can help protect wellbeing over the long term.

5. Are you challenging your brain?

Are you keeping your mind active by learning, reading, playing an instrument, or trying something new? Research shows that learning about your interests, activities like crossword puzzles or new physical activities can keep the brain healthy and potentially delay dementia. There’s no magic fix, but even small actions can have lasting benefits.

Why it matters

We developed the Take Five to Age Well quiz to help people reflect on how they’re doing across these five areas – and where there might be room to grow. The follow-up resources are based on real-life experiences of ageing from diverse communities and offer small, achievable steps you can start today.

Unlike many online quizzes, this one doesn’t just score you – it supports you. After signing up to the month-long challenge and taking the quiz, the Take Five to Age Well participants receive tips, encouragement and expert-led advice supporting participants’ current habits and needs.

We’ve also partnered with BridgitCare – organisation that works with Councils, the NHS and Carer Charities across the UK, to help identify carers and scale the support provided with the use of technology – to create Age Well, a free, web-based tool offering personalised daily actions. Whether you want to add more greens to your plate, look for expert tips, and easy ways to stay in control of your health, hobbies, and wellbeing or swap ten minutes of scrolling for a short walk, every step counts.




Read more:
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Age Well can also connect you to local groups and services to help turn good intentions into lasting routines.

Healthy ageing isn’t just about avoiding illness – it’s about learning how to age well, maintaining independence, confidence and quality of life. And with an ageing population, learning that supports all taking proactive steps to protect our mental and physical health is more important than ever.

The best part? Many of the most effective actions are small and realistic. You don’t have to run marathons or give up everything you enjoy. Take Five to Age Well meets you where you are – and helps you build a future where you feel stronger, more connected and better supported.

No matter your age, it’s never too early – or too late – to start your journey to ageing well.

The Conversation

Jitka Vseteckova is a Trustee with carers Buckinghamshire & Carers MK.

Lis Boulton Health & Care Policy Manager, in the Charity Influencing Division at Age UK. Lis is also Chair of the National Falls Prevention Coordination Group, and also Chair of Age UK Calderdale & Kirklees, her local Age UK in West Yorkshire.

ref. Are you ageing well? Take the five-part quiz that could help change your future – https://theconversation.com/are-you-ageing-well-take-the-five-part-quiz-that-could-help-change-your-future-256381

Rightwing populist Sanseitō party shakes Japan with election surge

Source: The Conversation – UK – By Rin Ushiyama, Lecturer in Sociology, Queen’s University Belfast

Japan held elections for its upper house, the House of Councillors, on July 20. The vote proved a challenge for the conservative ruling Liberal Democratic party (LDP), which has been reeling from corruption scandals, rising prices and US tariffs on Japanese exports.

The ruling coalition, composed of the LDP and its junior partner, Kōmeitō, lost its majority in the house. While the centre-left Constitutional Democratic party maintained its position as the largest opposition group, the breakout success of the election was that of Sanseitō, an ultranationalist populist party.

Sanseitō successfully framed immigration as a central issue in the election campaign, with the provocative slogan “Japanese First”. The party won 14 seats in the 248-seat chamber, a substantial jump from the single seat it won in the last election in 2022.

Sanseitō calls itself a party of “ordinary Japanese citizens with the same mindset who came together”. It was formed in 2020 by Sōhei Kamiya, a conservative career politician who served as a city councillor in Suita, a city in Osaka Prefecture, before being elected to the House of Councillors.

Although Sanseitō was initially known for its stance against the COVID-19 vaccine, it has more recently campaigned on an anti-foreigner and anti-immigration platform. The party, which also holds three seats in the powerful lower house, has quickly gained seats in regional and national elections. It most recently won three seats in Tokyo’s prefectural elections in June 2025.

Sanseitō is “anti-globalist”, urging voters to feel proud of their ethnicity and culture. Polls suggest the party is popular among younger men aged between 18 and 30.

Throughout the most recent election campaign, Kamiya repeatedly spread far-right conspiracy theories and misinformation. This included arguing multinational corporations caused the pandemic, as well as that foreigners commit crimes en masse and can avoid paying inheritance tax. Social media has amplified Sanseitō’s xenophobic messaging.

Sanseitō’s electoral success is reminiscent of other right-wing populist parties across Europe and North America, which also place immigration as a core issue.

Kamiya denies being a xenophobe. But he has expressed support for the Republican party in the US, Reform in the UK, Alternativ für Deutschland in Germany and Rassemblement National in France. Echoing other right-wing populist leaders, Kamiya has promised tax cuts, home-grown industries, regulation of foreigners and patriotic education.

However, while Sanseitō rides the global wave of right-wing populism, it also has deeply Japanese roots. Following Japan’s defeat in the second world war, a distinct current of right-wing thought developed, defending “traditional values” and glorifying Japan’s imperial past.

Tensions have flared periodically over issues such as history education and official visits to Yasukuni Shrine, where those who died in service of Japan – including military leaders convicted of war crimes – are commemorated. There have also been disputes around the memorialisation of so-called “comfort women”, who were forced into sex slavery by Japanese forces before and during the war.

Building on these currents, Sanseitō represents a new generation of Japanese conservatism, not just an emulation of foreign populist leaders.

What happens next?

Sanseitō’s rise could have a pivotal influence on Japan’s political landscape. While the prime minister, Shigeru Ishiba, has indicated he will not resign, the ruling coalition has now lost control of both houses. Ishiba may need to seek support from other parties and may face leadership challenges.

He also must respond to issues Sanseitō has raised. LDP policymakers are now aware of public anxieties surrounding migration, excessive tourism and cultural integration. Seeking to co-opt some of Sanseitō’s proposals, the government has already banned tourists from driving and set up a new government agency to address concerns about non-Japanese nationals. It has also pledged to reduce illegal immigration to zero.

But the government is facing steep economic and demographic challenges, such as US tariffs, a rapidly ageing and declining population, and a record-low birth rate. So it cannot afford to cut immigration dramatically. Policymakers will have to balance economic needs with hardening public attitudes towards foreigners.

It’s not just immigration that will be at stake. Ishiba will need to navigate wedge issues that could split the LDP’s conservative support base. These include same-sex marriage, the use of separate surnames by married couples, and female succession to the throne.

It’s too early to say whether Sanseitō can sustain its momentum. Numerous populist leaders in Japan before Kamiya have succeeded in turning mistrust of the political class into votes at the ballot box. However, few have been able to translate it into meaningful political change across multiple election cycles.

For instance, Shinji Ishimaru made headlines in 2024 after placing second in the race for Tokyo governor. But his Path to Reform party, which promised educational reform, struggled in the latest election. Reiwa Shinsengumi, the left populist party led by Tarō Yamamoto, also enjoyed success in previous elections but remains small.

Only time will tell if Sanseitō will become a major political party or yet another minority group on the fringes. But it’s clear anti-immigration populism has arrived in Japan. And it looks like it’s here to stay.

The Conversation

Rin Ushiyama does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Rightwing populist Sanseitō party shakes Japan with election surge – https://theconversation.com/rightwing-populist-sanseito-party-shakes-japan-with-election-surge-261303

Teenagers aren’t good at spotting misinformation online – research suggests why

Source: The Conversation – UK – By Yvonne Skipper, Senior Lecturer in Psychology (Education), University of Glasgow

Body Stock/Shutterstock

Misinformation is found in every element of our online lives. It ranges from fake products available to buy, fake lifestyle posts on social media accounts and fake news about health and politics.

Misinformation has an impact not only on our beliefs but also our behaviour: for example, it has affected how people vote in elections and whether people intend to have vaccinations.

And since anyone can create and share online content, without the kind of verification processes or fact checking typical of more traditional media, misinformation has proliferated.

This is particularly important as young people increasingly turn to social media for all kinds of information, using it as a source of news and as a search engine. But despite their frequent use of social media, teenagers struggle to evaluate the accuracy of the content they consume.

A 2022 report from media watchdog Ofcom found that only 11% of 11 to 17 year olds could reliably recognise the signs that indicated a post was genuine.

My research has explored what teenagers understand about misinformation online. I held focus groups with 37 11- to 14-year-olds, asking them their views on misinformation.


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I found that the young people in the study tended to – wrongly – believe that misinformation was only about world events and scams. Because of this, they believed that they personally did not see a lot of misinformation.

“[My Instagram] isn’t really like ‘this is happening in the world’ or whatever, it’s just kind of like life,” one said. This may make them vulnerable to misinformation as they are only alert for it in these domains.

There was also wide variation in how confident they felt about spotting misinformation. Some were confident in their skills. “I’m not daft enough to believe it,” as one put it.

Others admitted to being easily fooled. This was an interesting finding, as previous research has indicated that most people have a high level of confidence in their personal ability to spot misinformation.

Most did not fact-check information by cross-referencing what they read with other news sources. They relied instead on their intuition – “You just see it, you know” – or looked at what others said in comment sections to spot misinformation. But neither of these strategies is likely to be particularly reliable.

Relying on gut instinct typically means using cognitive shortcuts such as “I trust her, so I can trust her post” or “the website looks professional, so it is trustworthy”. This makes it easy for people to create believable false information.

And a study by Ofcom found that only 22% of adults were able to identify signs of a genuine post. This means that relying on other people to help us tell true from false is not likely to be effective.

Interestingly, the teens in this study saw older adults, particularly grandparents, as especially vulnerable to believing false information. On the other hand, they viewed their parents as more skilled at spotting misinformation than they themselves were. “[Parents] see it as fake news, so they don’t believe it and they don’t need to worry about it,” one said.

Parent and teen girl looking at phones
Teens thought their parents would be better than them at spotting misinformation online.
LightField Studios/Shutterstock

This was unexpected. We might assume that young people, who are often considered digital natives, would see themselves as more adept than their parents at spotting misinformation.

Taking responsibility

We discussed whose role it was to challenge misinformation online. The teens were reluctant to challenge it themselves. They thought it would not make a difference if they did, or they feared being victimised online or even offline.

Instead, they believed that governments should stop the spread of misinformation “as they know about what wars are happening”. But older participants thought that if the government took a leading role in stopping the spread of misinformation “there would be protests”, as it would be seen as censorship.

They also felt that platforms should take responsibility to stop the spread of misinformation to protect their reputation, so that people don’t panic about fake news.

In light of these findings, my colleagues and I have created a project that works with young people to create resources to help them develop their skills in spotting misinformation and staying safe online. We work closely with young people to understand what their concerns are, and how they want to learn about these topics.

We also partner with organisations such as Police Scotland and Education Scotland to ensure our materials are grounded in real-world challenges and informed by the needs of teachers and other adult professionals as well as young people.

The Conversation

Yvonne Skipper has received funding from the ESRC, Education Scotland and British Academy.

ref. Teenagers aren’t good at spotting misinformation online – research suggests why – https://theconversation.com/teenagers-arent-good-at-spotting-misinformation-online-research-suggests-why-260445

How young people have taken climate justice to the world’s international courts

Source: The Conversation – UK – By Susan Ann Samuel, PhD Candidate, School of Politics and International Studies, University of Leeds

Pla2na/Shutterstock, CC BY-NC-ND

Youth activist organisations including Pacific Islands Students Fighting Climate Change and World Youth for Climate Justice recently coordinated massive online calls across two different time zones. These two global gatherings were in preparation for a coordinated global youth movement around the release of the most anticipated advisory opinion scheduled to be delivered by the International Court of Justice (ICJ) on July 23 2025.

An advisory opinion is a legal interpretation provided by a high-level court or tribunal with a special mandate, in response to a specific question of law. Simply put, an advisory opinion is not legally binding in the way a court judgement between two nations would be.

But it is authoritative. The opinion carries significant legal, moral and political weight: since states often refer to advisory opinions when shaping policies, judges cite them for decisions and they’re used by civil society to hold governments accountable. An advisory opinion can influence shifting governance and principles governing it. I like to think of it as a northern star — it won’t change the reality but can guide potential outcomes and pave the way for future change.

As one of hundreds of participants attending both the online meetings, plus in my capacity as a researcher investigating the role of youth in climate law and politics, this collective action feels momentous.

The movement for an advisory opinion to ICJ began in 2019 when a few brave young people from the Pacific Islands stood up for the world. Twenty-seven law students at the Vanuatu campus of the University of South Pacific convinced their nation to champion climate action and accountability to the entire world by bringing climate justice to the world court.

For these students in the Pacific, the climate crisis means losing their identity, their culture and their homes to the rising sea levels and weather catastrophes. To the young people across the globe — including me — the concern about not being heard by world leaders becomes a shared reality, even though it is our future at stake.

Four courts, four continents

It’s not just the ICJ that’s delivering an advisory opinion. The world is at a turning point. For the first time, four world courts or tribunals across four continents are being asked to clarify nations’ legal obligations in the face of the climate crisis. The ICJ’s advisory opinion is the centrepiece: but it sits within a broader push primarily by global youth and developing countries — to clarify what human rights, state responsibility and climate justice mean in law.

A “quartet” of advisory opinions now spans four judicial bodies: the International Tribunal for the Law of the Sea, the Inter-American Court of Human Rights, the ICJ, and the African Court on Human and Peoples’ Rights. See the diagram below to check the timeline of each court proceeding.

In addition to the advisory opinions, there are currently 3,113 climate cases across the globe. These include many youth-led cases that bolster solidarity for climate action, call for futureproofing environmental governance, and evoke soft power around the legal proceedings.

These legal proceedings are the result of bold, persistent advocacy. These cases are not abstract. There’s a moral arc here: they primarily stem from advocacy from global youth movements, developing countries, civil society coalitions and frontline communities demanding legal recognition of climate harms and protection of future generations.

As such, the role of youth in bolstering moral power is massive. Their influence in empowering states across the globe to embody climate leadership is critical to pushing for political action, even amid geopolitical realities.

Tracing climate litigation patterns suggests that youth are changing the environmental governance space: as youth litigators (both young lawyers and youth-led cases), youth negotiators and youth activists. Youth across these three spheres — law, politics and activism — are mutually reinforcing each other in their advocacy, unlike ever before.

Themes of climate justice in litigation, negotiation, and social movements are deeply interconnected, rather than isolated from one another. Youth, who are active across all these spheres, often serve as key advocates, thereby reshaping governance dynamics in the process

The push for justice by youth is palpable, despite growing political concerns across the globe. Youth remains the common face of vulnerability, agency and promise. The call for justice is now.


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The Conversation

Susan Ann Samuel receives funding from Prof. Viktoria Spaiser’s UKRI FLF Grant MR/V021141/1 and is supported by the University of Leeds – School of Politics and International Studies.

ref. How young people have taken climate justice to the world’s international courts – https://theconversation.com/how-young-people-have-taken-climate-justice-to-the-worlds-international-courts-261033

Dating app categories could be shaping you more than you know

Source: The Conversation – UK – By Kevin Guyan, Chancellor’s Fellow & Director of the Gender + Sexuality Data Lab, University of Edinburgh

Natalllenka.m/Shutterstock

Any account of love and dating in the 2020s is incomplete without addressing an uncomfortable topic: are our encounters with technology shaping who we are and how we desire?

Dating apps such as Tinder, Bumble and Feeld allow users to choose from dozens of genders, sexualities, desires and relationship types. Commonplace descriptors such as “straight”, “gay” and “bisexual” are now joined by labels including “polysexual” (an attraction to multiple, but not all, genders), “skoliosexual” (an attraction predominantly to people who don’t conform to traditional gender norms) and “heteroflexible” (an attraction that is mostly heterosexual with some exceptions).

But do these categories provide a more accurate representation of the world beyond the app? Or do they partly construct the world they claim to describe?

As a regular user of gay dating apps throughout the late 2000s and early 2010s, I discovered a menu of categories to describe myself. There was everything from “twinks” (slim build, youthful appearance and little or no body hair) and “otters” (the same but with a bit more body hair and a more masculine appearance) to “bears” (large build and lots of body hair) and “muscle daddies” (older with a muscular physique).

I quickly understood how to maximise my success on the app by hacking the algorithm: the curated buzzwords in my bio, profile pics that struck the right balance between “sexy” and “intelligent”, how often to use the app and when. If the app gave prominence to a certain “category” of gay man in its listings, I was more than willing to present myself as that category.

But, in the process, the line between the category and the thing being categorised (me and my desires) became increasingly impossible to untangle.

This experience inspired research in my new book Rainbow Trap, which investigates the technical aspects of app design and how the provision of more “inclusive categories” for LGBTQ+ communities often does nothing to reconfigure the narrow accounts of desire encoded in the tech.


Dating today can feel like a mix of endless swipes, red flags and shifting expectations. From decoding mixed signals to balancing independence with intimacy, relationships in your 20s and 30s come with unique challenges. Love IRL is the latest series from Quarter Life that explores it all.

These research-backed articles break down the complexities of modern love to help you build meaningful connections, no matter your relationship status.


Writing in the early 2000s, science and technology scholars Geoffrey C. Bowker and Susan Leigh Star coined the term “convergence” to describe what happens when “people get put into categories and learn from those categories how to behave”. Philosopher of science Ian Hacking similarly used the term looping effect“ to describe the multi-directional relationship between a category and the “thing” being categorised.

These encounters, however, highlight a fundamental tension between queer communities and classifications: the classifications used to describe us also come to define us. This can determine what doors are opened and closed and who we are allowed to be.

Thinking back to my early forays into dating apps, I would often assign myself to the category of “twink”. Although used by app designers to assist with the algorithmic sorting of users, the identity felt contoured to my life.

The connections suggested by the app, based on my self-categorisation as a “twink”, felt as if they reflected who I was and what I had always wanted. And, for a period, I believed it.

However, in hindsight, I don’t know if I was ever really attracted to men with 26-inch waists and hair frazzled by too much bleach. I had limited myself to what the app told me I should like. But desire isn’t so easily put into a box.

Getting critical about categories

Underpinning the mechanics of all dating apps are categories, and we can learn a lot about love and dating by thinking critically about the categories used.

Between 2021 and 2023, Tinder reported a 30% increase in the use of gender identities other than “male” or “female” on the app, creating more than 145 million new matches. Identification with the label “non-binary” also more than doubled in just one year.

In 2023, the dating app Feeld (which describes itself as designed “for the curious”) reported that more than half its users who identified as “heterosexual” connected with someone on the app who did not identify as “heterosexual”. Feeld also has claimed that over 180,000 people “changed their sexuality” during their first year of using the app and that “the longer Feeld members are on the app, the less heterosexual they get”.

I am not suggesting that our navigation of love and dating through the prism of technology (and its growing menu of categories) is making us more queer – as these technologies could just as equally be making us more straight. But whatever is happening, it is clear that assigning yourself to a particular category opens and closes opportunities for love and desire.

It is app designers who then hold the power to decide what connections are made – for example, whether “twinks” connect with “bears”, whether your category features first or last on the home page. Because the classifications used to describe us are also now defining us, app designers partly shape how you think about yourself and your desires. This power does not stop when you turn off the app, it extends into offline worlds too.

So, for app users, be open to how your encounters with categories shape who and how you desire. Who will the app include and exclude based on your self-categorisation? And is that the experience you necessarily what?

The Conversation

Kevin Guyan does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Dating app categories could be shaping you more than you know – https://theconversation.com/dating-app-categories-could-be-shaping-you-more-than-you-know-256368

Is a ‘nanny state’ a price worth paying to keep the NHS free? The evidence shows it could work

Source: The Conversation – UK – By Renaud Foucart, Senior Lecturer in Economics, Lancaster University Management School, Lancaster University

Nanny says no. SOK Studio/Shutterstock

The UK government’s new ten-year-plan to transform the NHS includes a focus on preventing ill health rather than treating illness. But to what extent should people depend on the state to help them make healthy decisions?

Some think any kind of nudge in that direction is symptomatic of a “nanny state” overstepping its boundaries. Others might argue that nanny knows best, or that governments should do whatever works best both economically and to keep people healthy.

Either way, if a country like the UK wants to keep providing free (or at least tax-payer funded) and universal healthcare, rather than charging every patient for their specific needs, its choices are limited.

Take obesity for example, which is estimated to cost the NHS around £12.6 billion a year – more than 5% of its total budget.

In 2022, 28.7% of adults in the UK had obesity, compared to 10.9% in France, 14.3% in Denmark and 22% in Belgium. (In the US, it was 42.8%.)

Government analysis claims that if everyone who is overweight reduced their calorie intake by just 216 calories a day – roughly equivalent to a single 500ml bottle of fizzy drink – obesity would be halved, and so would the associated costs. It also estimates that cutting the calorie count of a daily diet by just 50 calories would lift 340,000 children and 2 million adults out of obesity.

But how should it persuade people to cut those calories? Happy to ignore accusations of being a nanny state, the UK government is now working with food retailers and manufacturers to encourage people to make healthier choices.

Under the plan, products will be made with less sugar and fat. And the data that supermarkets own about your shopping habits (through online shopping and loyalty cards) will be used to nudge you towards more fruits and vegetables and fewer bags of crisps. Businesses that fail to induce changes in customer consumption will face financial penalties.

And perhaps this is more effective than personal responsibility. Recent alternative policies which relied on individual action like following diets using the NHS weight loss app have not worked.

The UK has also invested hundred of millions of pounds trying to encourage people to burn calories by walking and cycling more. But the country remains reluctant to reduce its car-dependence, with its cities poorly served by public transport. Walking and cycling are just not that popular.

So perhaps state intervention is the only policy British people are willing to accept. Understandably, they want the freedom to make their own choices when it comes to exercise, eating and drinking, but they also want to keep the NHS free. Only 7% would support charging people for their use of healthcare.

Fat tax

Another option is to tax the consumption of fat and sugar to pay for the cost it imposes on others. In 2016, the UK was among the first countries to introduce a tax on sugary drinks. Since then, the total amount of sugar in British soft drinks has decreased by 46%, because changing the recipes means the producers pay less tax.

Research shows that the tax also deters younger people from buying too much sugar. However, it does little to reduce consumption among those who have the most sugar-intensive diets, just like alcohol taxes do nothing to convince the most addicted alcoholics to drink less.

There is also a valid argument that taxing sugar and fat is unfair. Unhealthy food is a much larger proportion of the budget of poorer households than it is for wealthier one, making it a regressive tax.

Placard on street expressing love for the NHS.
Love for the NHS.
John Gomez/Shutterstock

Yet policies nudging people towards healthy choices often have a good track record. A study of food labelling policies which placed warning labels on high sugar and high calorie foods in Chile showed that people bought less of them.

To stay below the threshold, firms then changed their recipes, just like with the tax. In that case, the warnings led to people consuming 11.5% less sugar and 2.8% less fat.

While paternalistic interventions can be annoying or upsetting, pretending obesity is purely an individual choice is misleading. Obesity starts in childhood, and can destroy future choices. Children with obesity are more likely to be bullied, and don’t do as well at school.

The state regularly bans harmful products without controversy. Even if you wanted to, you could not insulate your house with asbestos, and the UK is currently busy banning the sale of tobacco to anyone born after 2009.

With NHS waiting lists remaining at record highs, and a struggling economy, risk of the country becoming a nanny state by trying to encourage healthier food might actually be a pretty minor one.

The Conversation

Renaud Foucart does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Is a ‘nanny state’ a price worth paying to keep the NHS free? The evidence shows it could work – https://theconversation.com/is-a-nanny-state-a-price-worth-paying-to-keep-the-nhs-free-the-evidence-shows-it-could-work-260539

Three reasons buffets can be a recipe for a health disaster – and how to keep diners safe

Source: The Conversation – UK – By Kimon-Andreas Karatzas, Associate Professor of Food Microbiology, Department of Food and Nutritional Sciences, University of Reading

Perfect Wave/Shutterstock

You pile your plate high at the buffet, savouring the freedom to try a little bit of everything. But while your tastebuds might be celebrating, your gut could be at risk.

From shared serving spoons to lukewarm lasagne, buffets can be a breeding ground for bacteria – and a hotbed for food poisoning. In the UK alone, millions of cases go unreported each year. So what makes buffets so risky, and what can be done to stay safe?

Food poisoning is a serious issue in the UK and around the world. While most cases are mild and don’t require treatment, some can lead to hospitalisation or even death. Official figures suggest approximately 2.4 million people in the UK fall ill each year due to food-borne illness – mostly caused by viruses, bacteria or toxins in contaminated food. But because many people recover at home without reporting their symptoms, the real figure is likely much higher.

The Food Standards Agency (FSA) estimates that there are closer to 18 million cases of food poisoning in the UK each year. That’s almost one in four people. And buffets – particularly all-you-can-eat venues – are a common setting for outbreaks.

So, what is it about buffets that makes them such a hotspot for illness? Here are the key reasons these self-serve spreads carry higher risks:

1. Cross-Contamination

One of the biggest concerns at buffets is cross-contamination, when harmful bacteria, viruses or allergens are transferred from one food to another. This can happen in any kitchen, but buffets are particularly vulnerable.

Why? Because dozens of dishes are often displayed close together, customers serve themselves (sometimes without washing their hands), utensils are shared between people and dishes and food are exposed to the air for extended periods.

If just one dish becomes contaminated – say, with under-cooked meat juices or bacteria from unwashed hands – they can spread to other foods, affecting many people. Sneezes over platters and untrained customers handling food directly all increase the risk.

Even something as simple as using the same spoon for multiple dishes can be enough to transfer bacteria. With many hands touching the same utensils and food being moved or mixed between containers, even a well-run buffet can become a hazard zone as it is difficult to monitor and control that all customers abide to food safety rules.

2. Allergens

For people with food allergies, buffets can be particularly dangerous. Cross-contamination means that allergen-free foods can become unsafe through even minimal contact with allergenic ingredients.

For example, a spoon used in a nut-containing salad and then placed into a nut-free one can be enough to trigger a reaction. To reduce this risk, check that buffet venues clearly label all dishes with allergen information, use separate serving utensils for different foods, keep allergen-free dishes physically separate from others and train staff on allergen safety and cross-contamination risks.

Despite best intentions, busy buffet settings don’t always allow for these precautions to be enforced perfectly, putting allergic diners at greater risk.

3. Temperature trouble

One of the main food safety challenges at buffets is temperature control. Harmful bacteria multiply rapidly in what experts call the “danger zone”: the temperature range between 8°C and 63°C. If food sits within this range for too long, it becomes an ideal breeding ground for microbes.

Several types of bacteria are commonly responsible for food-borne illness in buffet settings.

Salmonella is often found in under-cooked poultry, eggs, and dairy products. It can cause diarrhoea, fever, and abdominal cramps, and it spreads easily if hot food is not kept at a safe temperature.

E. coli, typically linked to under-cooked beef and raw vegetables, can cause severe gastrointestinal illness and, in some cases, lead to kidney failure.

Listeria monocytogenes can grow in chilled foods like soft cheeses, pâté, and pre-packed sandwiches. It poses serious risks to pregnant women, older adults, and those with weakened immune systems.

Clostridium perfringens thrives in food that has been left warm for too long – especially items like stews, casseroles and roasts. It can cause sudden stomach cramps and diarrhoea.

Norovirus, also called the winter vomiting bug, is a stomach bug that causes vomiting and diarrhoea. Infected customers can pass this virus on the food with direct contact and cause disease to others that will consume it.

Staphylococcus aureus is a bacterium commonly found on the skin of humans and when it grows on food produces toxins that can cause nausea, vomiting, stomach cramps and diarrhoea. This bacterium can easily end up on the food through contact with utensils or customers and grow if the temperature of food is not within the correct range.

Maintaining safe food temperatures is essential to prevent these pathogens from multiplying. According to food safety guidelines, hot food should be kept above 63°C, and cold food below 8°C. However, in many buffet settings, food is left sitting out for extended periods – sometimes in ambient room temperatures, and sometimes without adequate heating or refrigeration equipment. This allows bacteria to flourish.

To minimise risk, hot food should not be left out for more than two hours, and cold food should be consumed within four. After these limits, leftover items should be discarded and not mixed with fresh batches. Reusing food that’s been sitting out not only compromises freshness but also risks spreading bacteria from old to new dishes.

Unfortunately, in busy all-you-can-eat environments, it’s common for staff to top up half-empty trays instead of replacing them. While this may reduce food waste, it increases the likelihood of contamination, especially during high-traffic service times. Without strict hygiene protocols in place, even small lapses in temperature control can lead to widespread illness.

Staying safe

Buffets don’t have to be a recipe for disaster – but safety depends on both the venue’s hygiene practices and diners’ own behaviour. Here’s what to look for:

  • dishes should be steaming hot or chilled, not lukewarm

  • clean utensils should be available for each item

  • clear allergen labels should be visible

  • staff should be monitoring and maintaining food stations

  • diners should wash their hands before serving themselves.

If in doubt, it’s safer to skip questionable dishes, especially those that look like they’ve been sitting out too long, are unlabelled, or have been clearly mixed with other items.

Buffets can be a delicious way to explore new flavours and enjoy variety. But without proper precautions, they can also pose serious food safety risks. Whether you’re tucking into a carvery, grazing a hotel breakfast, or piling your plate at an all-you-can-eat spread, it’s worth keeping an eye on hygiene – and knowing when to walk away from the buffet table.

The Conversation

Kimon-Andreas Karatzas receives funding from the EU, BBSRC, EPSRC and private companies (Future Biogas, Natureseal and AB Mauri)

ref. Three reasons buffets can be a recipe for a health disaster – and how to keep diners safe – https://theconversation.com/three-reasons-buffets-can-be-a-recipe-for-a-health-disaster-and-how-to-keep-diners-safe-260754

AI in universities: How large language models are transforming research

Source: The Conversation – Canada – By Ali Shiri, Professor of Information Science & Vice Dean, Faculty of Graduate & Postdoctoral Studies, University of Alberta

Generative AI, especially large language models (LLMs), present exciting and unprecedented opportunities and complex challenges for academic research and scholarship.

As the different versions of LLMs (such as ChatGPT, Gemini, Claude, Perplexity.ai and Grok) continue to proliferate, academic research is beginning to undergo a significant transformation.

Students, researchers and instructors in higher education need AI literacy knowledge, competencies and skills to address these challenges and risks.

In a time of rapid change, students and academics are advised to look to their institutions, programs and units for discipline-specific policy or guidelines regulating the use of AI.

Researcher use of AI

A recent study led by a data science researcher found that at least 13.5 per cent of biomedical abstracts last year showed signs of AI-generated text.




Read more:
AI-detection software isn’t the solution to classroom cheating — assessment has to shift


Large language models can now support nearly every stage of the research process, although caution and human oversight are always needed to judge when use is appropriate, ethical or warranted — and to account for questions of quality control and accuracy. LLMs can:

  • Help brainstorm, generate and refine research ideas and formulate hypotheses;

  • Design experiments and conduct and synthesize literature reviews;

  • Write and debug code;

  • Analyze and visualize both qualitative and quantitative data;

  • Develop interdisciplinary theoretical and methodological frameworks;

  • Suggest relevant sources and citations, summarize complex texts and draft abstracts;

  • Support the dissemination and presentation of research findings, in popular formats.

However, there are significant concerns and challenges surrounding the appropriate, ethical, responsible and effective use of generative AI tools in the conduct of research, writing and research dissemination. These include:

  • Misrepresentation of data and authorship;

  • Difficulty in replication of research results;

  • Data and algorithmic biases and inaccuracies;

  • User and data privacy and confidentiality;

  • Quality of outputs, data and citation fabrication;

  • And copyright and intellectual property infringement.

AI research assistants, ‘deep research’ AI agents

There are two categories of emerging LLM-enhanced tools that support academic research:

1. AI research assistants: The number of AI research assistants that support different aspects and steps of the research process is growing at an exponential rate. These technologies have the potential to enhance and extend traditional research methods in academic work. Examples include AI assistants that support:

  • Concept mapping (Kumu, GitMind, MindMeister);

  • Literature and systematic reviews (Elicit, Undermind, NotebookLM, SciSpace);

  • Literature search (Consensus, ResearchRabbit, Connected Papers, Scite);

  • Literature analysis and summarization (Scholarcy, Paper Digest, Keenious);

  • And research topic and trend detection and analysis (Scinapse, tlooto, Dimension AI).

2. ‘Deep research’ AI agents: The field of artificial intelligence is advancing quickly with the rise of “deep research” AI agents. These next-generation agents combine LLMs, retrieval-augmented generation and sophisticated reasoning frameworks to conduct in-depth, multi-step analyses.

Research is currently being conducted to evaluate the quality and effectiveness of deep research tools. New evaluation criteria are being developed to assess their performance and quality.

Criteria include elements such as cost, speed, editing ease and overall user experience — as well as citation and writing quality, and how these deep research tools adhere to prompts.

The purpose of deep research tools is to meticulously extract, analyze and synthesize scholarly information, empirical data and diverse perspectives from a wide array of online and social media sources. The output is a detailed report, complete with citations, offering in-depth insights into complex topics.

In just a short span of four months (December 2024 to February 2025), several companies (like Google Gemini, Perplexity.ai and ChatGPT) introduced their “deep research” platforms.

The Allen Institute for Artificial Intelligence, a non-profit AI research institute based in Seattle, is experimenting with a new open access research tool called Ai2 ScholarQA that helps researchers conduct literature reviews more efficiently by providing more in-depth answers.

Emerging guidelines

Several guidelines have been developed to encourage the responsible and ethical use of generative AI in research and writing. Examples include:

LLMs support interdisciplinary research

LLMs are also powerful tools to support interdisciplinary research. Recent emerging research (yet to be peer reviewed) on the effectiveness of LLMs for research suggests they have great potential in areas such as biological sciences, chemical sciences, engineering, environmental as well as social sciences. It also suggests LLMs can help eliminate disciplinary silos by bringing together data and methods from different fields and automating data collection and generation to create interdisciplinary datasets.

Helping to analyze and summarize large volumes of research across various disciplines can aid interdisciplinary collaboration. “Expert finder” AI-powered platforms can analyze researcher profiles and publication networks to map expertise, identify potential collaborators across fields and reveal unexpected interdisciplinary connections.

This emerging knowledge suggests these models will be able to help researchers drive breakthroughs by combining insights from diverse fields — like epidemiology and physics, climate science and economics or social science and climate data — to address complex problems.




Read more:
The world is not moving fast enough on climate change — social sciences can help explain why


Research-focused AI literacy

Canadian universities and research partnerships are providing AI literacy education to people in universities and beyond.

The Alberta Machine Intelligence Institute offers K-12 AI literacy programming and other resources. The institute is a not-for profit organization and part of Canada’s Pan-Canadian Artificial Intelligence Strategy.

Many universities are offering AI literacy educational opportunities that focus specifically on the use of generative AI tools in assisting research activities.

Collaborative university work is also happening. For example, as vice dean of the Faculty of Graduate & Postdoctoral Studies at the University of Alberta (and an information science professor), I have worked with deans from the University of Manitoba, the University of Winnipeg and Vancouver Island University to develop guidelines and recommendations around generative AI and graduate and postdoctoral research and supervision.

Considering the growing power and capabilities of large language models, there is an urgent need to develop AI literacy training tailored for academic researchers.

This training should focus on both the potential and the limitations of these tools in the different stages of the research process and writing.

The Conversation

Ali Shiri does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. AI in universities: How large language models are transforming research – https://theconversation.com/ai-in-universities-how-large-language-models-are-transforming-research-260547

Ghana has a rare treasure, a crater made when a meteor hit Earth: why it needs to be protected

Source: The Conversation – Africa – By Marian Selorm Sapah, Senior lecturer, University of Ghana

Impact craters are formed when an object from space such as a meteoroid, asteroid or comet strikes the Earth at a very high velocity. This leaves an excavated circular hole on the Earth’s surface.

It is a basic geological process that has shaped the planets from their formation to today. It creates landscapes and surface materials across our solar system. The moon is covered with them, as are planets like Mercury, Mars and Venus. On Earth, impacts have influenced the evolution of life and even provided valuable mineral and energy resources. However, very few of the impact craters on Earth are visible because of various processes that obscure or erase them.

Most of the recognised impact craters on Earth are buried under sediments or have been deeply eroded. That means they no longer preserve their initial forms.

The Bosumtwi impact crater in Ghana is different, however. It is well preserved (not deeply eroded or buried under sediments). Its well-defined, near-circular basin, filled by a lake, is surrounded by a prominent crater rim that rises above the surface of the lake and an outer circular plateau. This makes it a target for several research questions.

As an Earth scientist, I joined a research team from 2019 to better understand the morphology of the crater. We carried out a morphological analysis of the crater (a study of its form, structure and geological features).

This study concluded that the activities of illegal miners are a threat to the sustainability of the crater. We also discovered that the features of the Bosumtwi impact crater can be considered as a terrestrial representation for a special type of impact crater known as rampart craters. These are common on the planets Mars and Venus and are found on icy bodies of the outer solar system (like Ganymede, Europa, Dione, Tethys and Charon).

For future studies, the Bosumtwi impact crater can be used to help understand how rampart craters form on Mars and Venus. So the Bosumtwi impact crater should be protected and preserved.




Read more:
Curious Kids: Why are there so few impact craters on Earth?


The crater

The Bosumtwi impact crater is in Ghana’s mineral-rich Ashanti gold belt. It is the location of the only natural inland lake in Ghana. As one of the world’s best-preserved young meteorite impact craters it is designated as an International Union of Geological Sciences geoheritage site.

It is one of only 190 confirmed impact crater sites worldwide, one of only 20 on the African continent. Its lake is one of six meteoritic lakes in the world, recognised for their outstanding scientific value.

At almost 1.07 million years old, the crater offers unparalleled opportunities for studying impact processes, climate history and planetary evolution. It’s an irreplaceable natural laboratory for researchers and educators.

Beyond its scientific importance, the crater holds cultural significance for the Ashanti people of Ghana. The lake at its centre serves as a sacred site and spiritual landmark. The crater’s breathtaking landscape also supports eco-tourism and local livelihoods, contributing to Ghana’s economic development while maintaining exceptional aesthetic value.

The research

As part of further research work on the 2019 study, in 2025 we have discovered through field work and satellite data analysis that illegal artisanal mining is prevalent in the area and threatening the crater. This refers to informal, labour-intensive extraction of minerals, primarily gold. It is conducted by individuals or small groups using basic tools and rudimentary machinery. The use of toxic chemicals such as mercury and cyanide, and practices such as river dredging, cause severe environmental harm.

Illegal miners are encroaching on and around the crater rim, posing severe threats to its environment and sustainability. Their activities have become more prevalent over the course of less than 10 years, indicating a growing problem. If unchecked, it could lead to irreversible damage to the crater.

These mining operations risk contaminating the lake with toxic heavy metals. The consequences of these are grave. They include destroying critical geological evidence, accelerating deforestation, and degrading the land. All this damages the crater’s scientific, cultural and economic value.

The International Union of Geological Sciences geoheritage designation of the crater underscores the urgent need for protection measures. The loss of this rare geological wonder would represent not just a national tragedy for Ghana, but a blow to global scientific heritage.

Immediate action is required. This includes enhanced satellite monitoring (tracking illegal mining, deforestation and environmental changes) using optical imagery (such as Sentinel-2, Landsat, PlanetScope). These tools can detect forest loss, identify mining pits and sediment runoff, and analyse changes over time.

Stricter enforcement of mining bans, and community engagement programmes, will help preserve the Bosumtwi impact crater’s unique attributes for future generations of scientists, students, tourists and local communities who depend on its resources.

The Conversation

Marian Selorm Sapah does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

ref. Ghana has a rare treasure, a crater made when a meteor hit Earth: why it needs to be protected – https://theconversation.com/ghana-has-a-rare-treasure-a-crater-made-when-a-meteor-hit-earth-why-it-needs-to-be-protected-260600

Africa’s minerals are being bartered for security: why it’s a bad idea

Source: The Conversation – Africa (2) – By Hanri Mostert, SARChI Chair for Mineral Law in Africa, University of Cape Town

A US-brokered peace deal between the Democratic Republic of Congo (DRC) and Rwanda binds the two African nations to a worrying arrangement: one where a country signs away its mineral resources to a superpower in return for opaque assurances of security.

The peace deal, signed in June 2025, aims to end three decades of conflict between the DRC and Rwanda.

A key part of the agreement binds both nations to developing a regional economic integration framework. This arrangement would expand cooperation between the two states, the US government and American investors on “transparent, formalized end-to-end mineral chains”.

Despite its immense mineral wealth, the DRC is among the five poorest countries in the world. It has been seeking US investment in its mineral sector.

The US has in turn touted a potential multi-billion-dollar investment programme to anchor its mineral supply chains in the traumatised and poor territory.

The peace that the June 2025 deal promises, therefore, hinges on chaining mineral supply to the US in exchange for Washington’s powerful – but vaguely formulated – military oversight.

The peace agreement further establishes a joint oversight committee – with representatives from the African Union, Qatar and the US – to receive complaints and resolve disputes between the DRC and Rwanda.

But beyond the joint oversight committee, the peace deal creates no specific security obligations for the US.

The relationship between the DRC and Rwanda has been marred by war and tension since the bloody First (1996-1997) and Second (1998-2003) Congo wars. At the heart of much of this conflict is the DRC’s mineral wealth. It has fuelled competition, exploitation and armed violence.

This latest peace deal introduces a resources-for-security arrangement. Such deals aren’t new in Africa. They first emerged in the early 2000s as resources-for-infrastructure transactions. Here, a foreign state would agree to build economic and social infrastructure (roads, ports, airports, hospitals) in an African state. In exchange, it would get a major stake in a government-owned mining company. Or gain preferential access to the host country’s minerals.

We have studied mineral law and governance in Africa for more than 20 years. The question that emerges now is whether a US-brokered resources-for-security agreement will help the DRC benefit from its resources.

Based on our research on mining, development and sustainability, we believe this is unlikely.

This is because resources-for-security is the latest version of a resource-bartering approach that China and Russia pioneered in countries such as Angola, the Central African Republic and the DRC.

Resource bartering in Africa has eroded the sovereignty and bargaining power of mineral-rich nations such as the DRC and Angola.

Further, resources-for-security deals are less transparent and more complicated than prior resource bartering agreements.

DRC’s security gaps

The DRC is endowed with major deposits of critical minerals like cobalt, copper, lithium, manganese and tantalum. These are the building blocks for 21st century technologies: artificial intelligence, electric vehicles, wind energy and military security hardware. Rwanda has less mineral wealth than its neighbour, but is the world’s third-largest producer of tantalum, used in electronics, aerospace and medical devices.

For almost 30 years, minerals have fuelled conflict and severe violence, especially in eastern DRC. Tungsten, tantalum and gold (referred to as 3TG) finance and drive conflict as government forces and an estimated 130 armed groups vie for control over lucrative mining sites. Several reports and studies have implicated the DRC’s neighbours – Rwanda and Uganda – in supporting the illegal extraction of 3TG in this region.

The DRC government has failed to extend security over its vast (2.3 million square kilometres) and diverse territory (109 million people, representing 250 ethnic groups). Limited resources, logistical challenges and corruption have weakened its armed forces.

This context makes the United States’ military backing enormously attractive. But our research shows there are traps.

What states risk losing

Resources-for-infrastructure and resources-for-security deals generally offer African nations short-term stability, financing or global goodwill. However, the costs are often long-term because of an erosion of sovereign control.

Here’s how this happens:

Examples of loss or near-loss of sovereignty from these sorts of deals abound in Africa.

For instance, Angola’s US$2 billion oil-backed loan from China Eximbank in 2004. This was repayable in monthly deliveries of oil, with revenues directed to Chinese-controlled accounts. The loan’s design deprived Angolan authorities of decision-making power over that income stream even before the oil was extracted.

These deals also fragment accountability. They often span multiple ministries (such as defence, mining and trade), avoiding robust oversight or accountability. Fragmentation makes resource sectors vulnerable to elite capture. Powerful insiders can manipulate agreements for private gain.

In the DRC, this has created a violent kleptocracy, where resource wealth is systematically diverted away from popular benefit.

Finally, there is the risk of re-entrenching extractive trauma. Communities displaced for mining and environmental degradation in many countries across Africa illustrate the long-standing harm to livelihoods, health and social cohesion.

These are not new problems. But where extraction is tied to security or infrastructure, such damage risks becoming permanent features, not temporary costs.

What needs to change

Critical minerals are “critical” because they’re hard to mine or substitute. Additionally, their supply chains are strategically vulnerable and politically exposed. Whoever controls these minerals controls the future. Africa must make sure it doesn’t trade that future away.

In a world being reshaped by global interests in critical minerals, African states must not underestimate the strategic value of their mineral resources. They hold considerable leverage.

But leverage only works if it is wielded strategically. This means:

  • investing in institutional strength and legal capacity to negotiate better deals

  • demanding local value creation and addition

  • requiring transparency and parliamentary oversight for minerals-related agreements

  • refusing deals that bypass human rights, environmental or sovereignty standards.

Africa has the resources. It must hold on to the power they wield.

The Conversation

Hanri Mostert receives funding from the National Research Foundation (NRF) of South Africa. She is a member of the Expropriation Expert Group and a steering committee member of the International Bar Association’s (IBA) Academic Advisory Group (AAG) in the Sector for Energy, Environmental, Resources and Infrastructure Law (SEERIL).

Tracy-Lynn Field receives funding from the Claude Leon Foundation. She is a non-executive director of the Wildlife and Environment Society of South Africa.

ref. Africa’s minerals are being bartered for security: why it’s a bad idea – https://theconversation.com/africas-minerals-are-being-bartered-for-security-why-its-a-bad-idea-260594