Health
Study Links PFAS Exposure to Gut Microbiome Issues and Kidney Damage in Young Adults
LOS ANGELES — New research suggests that exposure to per- and polyfluoroalkyl substances (PFAS), commonly referred to as “forever chemicals,” may contribute to disruptions in the gut microbiome that could, in turn, lead to kidney damage in young adults. This study adds to mounting concerns about the health impacts of these persistent chemicals.
PFAS, a group of synthetic chemicals, are widely used in a variety of everyday products, including food packaging, non-stick cookware, and water-resistant fabrics. Known as “forever chemicals” for their resilience, PFAS are nearly indestructible in nature and in the human body. As a result, they accumulate over time, becoming a near-universal presence in blood samples worldwide.
“Nearly everyone has PFAS in their blood, and these chemicals are linked to a range of negative health effects. But without interventions to remove PFAS from the body, there are no actionable recommendations to reduce exposure effects,” said Dr. Hailey Hampson, lead author and postdoctoral fellow at the Keck School of Medicine, in a statement.
Previous studies have associated PFAS exposure with a range of health issues, including liver damage, thyroid disorders, obesity, reproductive issues, and various cancers. This latest study highlights kidney disease as another potential consequence of exposure, focusing specifically on how changes in gut microbiome health may drive kidney damage in young adults.
In the study, researchers examined data from a cohort of 78 young adults, primarily Hispanic, aged 17 to 22, who are at higher risk of chronic kidney disease. Blood and stool samples collected from participants helped researchers measure PFAS levels, assess gut microbiome composition, and analyze metabolites circulating in their bodies. Four years later, the team reassessed the participants’ kidney function to evaluate long-term effects.
Findings revealed that participants with higher PFAS exposure experienced worse kidney function over time. The researchers linked this effect to changes in the gut microbiome, where PFAS exposure seemed to reduce anti-inflammatory metabolites and the bacteria responsible for producing them, while promoting inflammatory metabolites. The researchers found that these disruptions in gut health contributed to up to 50% of the decline in kidney function observed in the high-exposure group.
“These findings are an important piece of the puzzle about the many different health risks of PFAS,” said Dr. Jesse Goodrich, senior author of the study, which was published in Science of the Total Environment. “This information can help policymakers develop protections against exposure to these chemicals.”
While the sample size was limited, researchers emphasized the potential of their findings to guide future public health policies. As public awareness of PFAS contamination grows, the study offers early insights that may inform strategies to mitigate exposure and protect vulnerable populations.
The research team hopes that these insights will add to the growing body of evidence necessary for establishing regulations around PFAS, which remain ubiquitous in modern society despite their risks to human health.
Health
Europe Faces Persistent Doctor Shortages Despite Rising Graduate Numbers
Doctor shortages continue to challenge healthcare systems across Europe, driven by an ageing workforce and a declining interest among graduates in general practice.
Every year, thousands of students complete their medical studies in Europe, yet the region still struggles to meet demand for healthcare professionals. In 2023, over 66,000 doctors graduated in the European Union, equivalent to roughly 15 graduates per 100,000 inhabitants, according to Eurostat. Numbers vary widely between countries, with Türkiye producing 13,720 graduates, Germany 10,186, and Italy 9,795. At the other end of the spectrum, only 31 doctors completed their studies in Montenegro, 52 in Iceland, and 144 in Estonia.
A significant share of graduates in countries such as Bulgaria, Romania, and Latvia are foreign nationals, many of whom leave the country after completing their studies. This has turned some nations into training hubs for doctors while widening regional disparities. Romania, however, has managed to reduce doctor migration over the past decade. According to the World Health Organization (WHO), the number of doctors leaving Romania fell from 1,500 in 2012 to 461 in 2021, thanks to improved pay, training, and working conditions.
“Health worker migration is a reality in our interconnected and globalised world, and we have the solutions to ensure it works for all parties. Countries can learn from each other’s experiences,” said Natasha Azzopardi-Muscat of WHO Europe. She added that failing to manage workforce movement fairly risks worsening health inequities and leaving fragile healthcare systems unable to cope.
Despite more graduates entering the system, shortages remain acute, particularly among general practitioners (GPs). While the overall number of doctors has grown in most countries, only about one in five in the EU work as GPs. Tiago Villanueva, a family physician and president of the European Union of General Practitioners/Family Physicians, told Euronews Health that graduates increasingly choose specialised fields, such as dermatology or ophthalmology, for better work-life balance and quality of life. He added that the solution lies in making general practice more visible and appealing, rather than simply increasing the number of medical graduates.
Europe’s doctor shortages are unevenly distributed. Austria has the highest ratio of practising doctors at 551 per 100,000 inhabitants, followed by Italy and Cyprus at 535, while Finland has the lowest at 288 per 100,000.
Ageing of the healthcare workforce adds further pressure. In 2023, nearly one-third of doctors in EU countries were over 55, according to OECD data. Countries with large shares of older doctors will need to train sufficient numbers of new professionals while encouraging those nearing retirement to continue working where possible.
With a projected shortage of 950,000 health workers by 2030, Europe faces a critical challenge in balancing rising graduate numbers with the need to retain talent and fill vital roles in general practice and other essential specialties.
Health
Universal School Meals Could Reduce Global Undernourishment by Nearly a Quarter, Study Finds
Providing every child with a healthy, sustainable school meal could significantly cut global hunger, prevent diet-related deaths, and reduce the environmental impact of diets, according to new research by University College London (UCL).
Scientists estimate that extending school meal coverage from the current level of about one in five children to all children worldwide by 2030 could reduce the overall prevalence of undernourishment by around 24 percent. The modelling study suggests such an approach could also prevent more than one million deaths each year from diet-related diseases and cut the number of people lacking essential vitamins by roughly 120 million.
“Our modelling shows that healthy and sustainable school meals can generate substantial health and environmental gains in every region of the world,” said Marco Springmann, the corresponding author of the study and modelling lead for the Research Consortium at UCL’s Institute for Global Health. “The evidence is clear: investing in school meals is both effective and economically sound.”
The study compared current school meal coverage with a scenario in which all children receive at least one meal a day. Researchers examined the potential effects on nutrition, long-term health, greenhouse gas emissions, land and water use, and calculated the cost savings from improved health outcomes and reduced environmental damage.
Results show that environmental benefits depend on meal composition. School meals aligned with healthy and sustainable dietary recommendations—emphasizing vegetables and limiting meat and dairy—combined with reduced food waste, could cut food-related environmental impacts by roughly half. The study also examined costs, estimating additional spending equivalent to about 0.1 percent of national income in high-income countries and up to 1 percent in low-income nations. However, reductions in healthcare costs and climate-related damages were found to largely offset these investments.
Currently, school meal programs feed approximately 466 million children every day, representing around 70 percent of the global public food system. Experts warn that achieving universal coverage will require strong political commitment and consistent funding, especially in low-income countries, where fewer than one in ten children receive school meals.
“School meals are not just a nutrition programme – they are a powerful lever for transforming food systems,” said Silvia Pastorino, diets and planetary health lead for the Research Consortium for School Health and Nutrition and a researcher at the London School of Hygiene & Tropical Medicine. “When meals are healthy, sustainable and linked to food education, they improve children’s wellbeing today and foster long-term sustainable habits, while helping countries protect biodiversity, reduce emissions and build resilient communities.”
The research consortium is part of the School Meals Coalition, an initiative led by France and Finland, formed in 2021 after more than 100 countries pledged to provide a healthy school meal for every child by 2030. The consortium is also developing a “Planet-Friendly School Meals Toolkit” to help countries evaluate costs, health benefits, and environmental impacts of sustainable school meal programs, with first results expected in spring 2026.
Health
From Functional Drinks to LED Masks: The Biggest Health Trends of 2025 and What Experts Say
As 2025 comes to a close, social media continues to shape the way people eat, drink, rest, and optimise their health, with platforms like TikTok, Instagram, and Reddit driving a mix of revived and new wellness trends. Some have gone viral for their novelty, while others raise questions about effectiveness and safety.
One of the most visible trends has been “loaded water” or “enhanced water,” which combines plain water with electrolytes, flavourings, supplements, coconut water, or fruit. Proponents claim it boosts energy, digestion, and focus. Nutrition experts caution that most people do not need daily electrolyte supplements, as the body regulates these naturally. “Excessive intake of some electrolytes, such as sodium and potassium, may be risky for people with high blood pressure or kidney disease,” dietitian Helen Tieu told Healthline. She recommends using whole fruit over syrups or powders and keeping sugar content low.
Diet trends such as the carnivore and “lion” diets, which limit consumption to meat, eggs, dairy, or in the lion diet, just beef, salt, and water, have also gained attention. Advocates claim these diets improve gut health, sleep, and skin, but experts warn of significant risks. Dr Bhavini Shah from LloydsPharmacy Online Doctor described the carnivore diet as unbalanced, noting overconsumption of meat is linked to high blood pressure, cholesterol, cardiovascular disease, and Type-2 diabetes. Research from Harvard and MIT found processed red meat accelerated cognitive ageing by 1.6 years per average serving, while substituting nuts or legumes lowered dementia risk.
In skincare, at-home LED masks have become a popular tool, offering red, blue, or near-infrared light therapy. Consultant dermatologist Dr Jonathan Kentley said the technology can trigger collagen production and reduce acne, while Dr Justine Kluk warned that benefits remain modest and long-term studies are limited. Dermatologist Janiene Luke added that at-home masks are not as effective as clinical treatments but can complement prescription regimens.
Functional drinks, including mushroom coffees and CBD-infused beverages, also went mainstream, with ingredients like ashwagandha, Lion’s Mane, magnesium, and L-theanine marketed for stress relief, focus, and calm. Nicole Cucco, a registered dietitian, said some evidence supports these ingredients, particularly for stress or attention, but effects often depend on individual deficiencies or placebo influence. She urged consumers to research products carefully rather than rely solely on marketing claims.
Other viral wellness habits, such as “bed rotting” — spending extended periods resting or sleeping as a form of self-care — reflect a broader trend toward mental health and downtime. Experts note these practices can be beneficial if balanced with activity, but they are no substitute for medical guidance or structured routines.
As 2025 ends, it is clear that health trends online can be fun and sometimes helpful, but experts emphasize that evidence and moderation remain essential when adopting new wellness practices.
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