Health
Study Links Prenatal Exposure to ‘Forever Chemicals’ with Teen High Blood Pressure
Exposure to “forever chemicals” before birth may increase the risk of high blood pressure during adolescence, according to new research that raises further concerns about the long-term health effects of per- and polyfluoroalkyl substances (PFAS).
The study, published in the Journal of the American Heart Association, followed over 1,000 children across the United States, tracking their health from birth through their teenage years. Researchers used maternal blood samples collected shortly after childbirth to determine prenatal PFAS exposure levels, then analyzed medical records up to the children’s 18th birthdays.
PFAS are a group of man-made chemicals commonly used in products such as non-stick cookware, water-repellent fabrics, and food packaging. Known for their resistance to degradation, they are often called “forever chemicals” because they accumulate in the environment and in the human body. Previous studies have linked PFAS exposure to health problems including certain cancers, fertility issues, and high cholesterol.
This new study now adds adolescent hypertension to that list. Lead author Zeyu Li, a researcher at Johns Hopkins University, said the findings suggest that prenatal exposure to PFAS can have “long-lasting and potentially harmful effects” that may not become visible until years later.
The risk of high blood pressure was found to be especially elevated among teenage boys and Black children who had higher PFAS levels at birth. Interestingly, the researchers noted that some types of PFAS were associated with lower diastolic blood pressure during early childhood — though this trend reversed by adolescence.
Experts say the new findings contribute to a growing body of evidence linking PFAS to cardiovascular and developmental issues, but the science remains complex. There are thousands of PFAS compounds, and their effects can vary widely based on individual exposure levels and chemical combinations over time.
Senior author Mingyu Zhang, an assistant professor at Harvard Medical School, emphasized the need for stronger public health safeguards. “PFAS are so widespread that it’s nearly impossible for individuals to avoid them. We need broader regulatory measures to protect people from these chemicals,” he said.
Zhang called for stricter limits on PFAS in water systems, greater monitoring of exposure levels, and the phase-out of PFAS from consumer and industrial products. The study also underscores the importance of long-term research to better understand the impact of environmental toxins on health from infancy through adulthood.
Health
Global Mental Health Cases Near 1.2 Billion as Anxiety and Depression Drive Sharp Worldwide Rise
A major global analysis has found that mental health conditions have surged to an estimated 1.2 billion people worldwide, driven largely by steep increases in anxiety and depression over the past three decades.
The findings, published in The Lancet as part of the Global Burden of Disease Study 2023, show that the number of people living with mental disorders has almost doubled since 1990, marking a 95% rise. Researchers say major depressive disorder and anxiety disorders have seen even sharper growth, increasing by 131% and 158% respectively, making them the most prevalent mental health conditions globally.
The report describes mental illnesses as widespread conditions that create long-term disability and significant human suffering. It also highlights broader consequences for economies and public services, including reduced productivity, lower workforce participation and increasing pressure on health and welfare systems.
Researchers estimate that in 2023 alone, around 620 million females and 552 million males were affected by mental health conditions. While the overall burden is rising across both sexes, the study points to notable differences in the types and prevalence of disorders.
Among women, depression and anxiety were the most commonly reported conditions, alongside higher rates of eating disorders such as anorexia nervosa and bulimia nervosa. The report links this disparity to a mix of biological, social and structural factors, including exposure to domestic violence, sexual abuse, gender inequality and reproductive health-related changes.
In contrast, neurodevelopmental and behavioural disorders, including attention deficit hyperactivity disorder (ADHD), conduct disorder and autism spectrum conditions, were more frequently diagnosed in men.
Teenagers aged 15 to 19 were identified as the group experiencing the highest mental health burden globally, raising concerns about early onset of conditions and insufficient preventive care for young people.
The study identifies several key risk factors associated with mental illness, including childhood sexual violence, bullying and intimate partner violence. These factors are strongly linked to conditions such as depression, schizophrenia, bipolar disorder and anxiety disorders. However, researchers note that such exposures have remained relatively stable over time and account for only a portion of the overall rise.
According to the authors, broader drivers are likely contributing to the increasing prevalence of mental disorders. These include genetic and biological influences, poverty, inequality, and the growing impact of global crises such as armed conflict, pandemics, natural disasters and climate-related stress.
While mental health conditions have long been a leading cause of disability worldwide, the report warns that the situation is worsening. At the same time, health systems have not expanded services at a pace matching demand.
The authors caution that the gap between rising need and limited access to care is becoming more pronounced, leaving millions without adequate treatment or support.
Health
Europe Records Sharp Rise in Sexually Transmitted Infections, ECDC Warns
Health
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