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
World Cup Emotion Can Strain the Heart, Cardiologists Warn Fans at Risk
As the World Cup begins, medical experts are cautioning football fans with underlying heart conditions that the emotional intensity of matches can place unexpected strain on the cardiovascular system.
Cardiologists say that the excitement, tension, and anxiety generated during high-stakes games can trigger physical reactions similar to intense exercise, raising heart rate, blood pressure, and stress hormones.
“Intense emotions, whether positive or negative, can act as ‘precipitating risk factors’ for cardiovascular events such as heart attack,” said Paola Santalucia, a cardiologist and board member of the European Heart Network.
She explained that moments of extreme excitement, such as a decisive penalty shootout or a last-minute goal, may pose risks for people already living with heart disease. Those with additional risk factors, including hypertension, obesity, or smoking habits, are also advised to be cautious during emotionally charged matches.
Research using wearable devices has shown that during major football events, some fans experience heart rates climbing as high as 150 beats per minute. That level is comparable to sprinting and reflects how strongly the body reacts to emotional stress.
A study examining supporters during the 2025 German Cup final found that even watching from home can significantly affect physiological responses. “They still had an increase in heart rate that compares to walking, even though they didn’t walk,” said Christian Deutscher, professor of sports economics at Bielefeld University and co-author of the study.
He noted that the most intense reactions often occur not during goals themselves, but during moments of uncertainty such as VAR checks, penalty shootouts, or shots striking the post. These unpredictable situations, he said, are what drive the strongest emotional and physical responses among fans.
Deutscher also pointed out that stadium spectators may experience even greater strain due to environmental factors such as heat and alcohol consumption.
However, experts emphasize that football itself is not inherently dangerous. Instead, it is the body’s natural response to excitement that can create temporary stress.
“The adrenergic stimulation is at its max: extreme high blood pressure, high heart rate, and adrenaline, cortisol, skyrocketing,” said Dan Atar, professor of cardiology at Oslo University Hospital. In rare cases, he added, this surge can contribute to the rupture of arterial plaque in vulnerable individuals, potentially leading to a heart attack.
Atar stressed that such events can occur in everyday situations as well, including physical exertion like shoveling snow. “It is in no way dangerous to watch a football game,” he said. “All this is physiologic. It’s not dangerous to be excited.”
Still, he acknowledged that combining emotional stress with alcohol, heat, and pre-existing conditions can increase risk for some viewers.
Doctors advise those at higher risk to continue prescribed medications, limit alcohol intake, avoid smoking, and watch for warning signs such as chest pain or irregular heartbeat.
“The key message is not to avoid enjoying the match, but to do so with moderation and awareness,” Santalucia said.
Health
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Health
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