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Tag: PFAS

  • Scientists Detect ‘Forever Chemicals’ in Almost Every U.S. Blood Sample

    Scientists Detect ‘Forever Chemicals’ in Almost Every U.S. Blood Sample

    A recent comprehensive study reveals that almost everyone tested has dangerous “forever chemicals” in their blood, intensifying worries about how deeply these man-made substances have infiltrated modern life. Scientists examined over 10,500 blood samples and discovered that 98.8% contained at least one type of PFAS, a group of chemicals commonly called “forever chemicals” because they degrade very slowly, lingering in the environment and human bodies for years.

    Published in the Journal of Occupational and Environmental Hygiene, this marks one of the largest investigations into PFAS levels in human blood. The findings also show that most individuals don’t just carry a single PFAS compound but multiple at once—about 98.5% of tested individuals had several types in their bodies.

    PFAS, which stands for per- and polyfluoroalkyl substances, have been widely used since the 1940s due to their resistance to heat, oil, water, and stains. They’ve been incorporated into thousands of everyday products. Today, PFAS are found in nonstick cookware, waterproof clothing, food packaging, stain-resistant carpets, firefighting foam, cosmetics, electronics, and some medical supplies. Over time, these chemicals can seep into water sources, soil, food, and indoor dust.

    Scientists are increasingly worried because PFAS don’t break down easily once released into the environment. Instead, they gradually accumulate in animals, ecosystems, and humans over many years. While more research is needed to fully understand the health impacts of all PFAS variants—there are about 10,000 different types—studies have linked some to serious health issues. These include cancers, infertility, hormone disruption, liver problems, weakened immune systems, high cholesterol, thyroid disease, and developmental issues in children.

    One chemical frequently detected in this study was perfluorohexane sulfonic acid, known for its potential to harm the liver, thyroid, and immune system. Researchers analyzed 10,566 blood serum and plasma samples collected by NMS Labs, a leading independent testing laboratory. Most samples were checked for 13 PFAS chemicals, while a smaller subset tested for 18.

    Results indicate that exposure to PFAS rarely involves just one chemical. Instead, people are typically exposed to complex mixtures of several types simultaneously. Researchers identified dozens of different combinations, with the most common—including five PFAS chemicals—appearing in more than 25% of samples. These combinations often contain older PFAS compounds like PFOS and PFOA and newer replacement chemicals used in consumer products.

    This complexity is crucial because safety assessments traditionally examine one chemical at a time. However, people are exposed to many PFAS chemicals together, which may have combined effects that are more harmful than individual exposures. Dr. Laura Labay, the study’s lead author and a toxicologist at NMS Labs, explained that these findings offer a “real-world snapshot” of widespread PFAS exposure and can help scientists better understand potential health risks while guiding public health policies.

    It’s also worth noting that some PFAS chemicals might not have been included in the testing panels, meaning actual exposure levels could be even higher. Public concern about PFAS has surged recently, especially as communities across the U.S. and beyond discover contamination in drinking water near military bases, airports, factories, and sites where firefighting foam has been used extensively.

    Efforts to curb exposure are underway, with some countries already banning or restricting certain PFAS. Yet, many of these substances remain in widespread use because they are highly valued in manufacturing, thanks to their resistance to heat and water. Developing safer alternatives has proved challenging for many industries.

    Individuals can take small steps to reduce their exposure, such as avoiding products labeled as stain- or water-resistant, using water filters certified to remove PFAS, and limiting consumption of heavily packaged fast foods. Nevertheless, given how pervasive PFAS are today, total avoidance remains nearly impossible.

    This study emphasizes how embedded these chemicals are in modern life and highlights the importance of ongoing research into their long-term health effects. It also suggests that future studies should focus more on the combined impacts of multiple PFAS chemicals rather than treating each one separately.

    While the research doesn’t directly link these chemicals to specific illnesses, it supports mounting concerns about widespread exposure. Larger, more detailed studies are needed to understand how these chemical mixtures influence health over decades.

  • Most Americans Tested Have ‘Forever Chemicals’ in Their Blood

    Most Americans Tested Have ‘Forever Chemicals’ in Their Blood

    A recent extensive study has revealed that almost every blood sample tested contained PFAS, a group of chemicals commonly referred to as “forever chemicals” because they linger in the environment and human bodies for extremely long periods.

    The research analyzed over 10,500 blood samples, finding PFAS in 98.8% of them. Experts say these results highlight how pervasive these chemicals have become in daily life.

    Published in the Journal of Occupational and Environmental Hygiene, this study is among the largest investigations on PFAS levels in humans to date.

    PFAS, short for per- and polyfluoroalkyl substances, are a broad family of man-made chemicals that have been used for decades to make products resistant to water, grease, stains, and high heat.

    These chemicals are present in many common items, including nonstick cookware, waterproof jackets, food wrappers, carpets, furniture, cosmetics, electronics, and firefighting foams. Because PFAS break down very slowly, they can remain in water, soil, and living organisms for many years.

    Scientists now believe PFAS contamination is nearly everywhere in the modern world. They have been detected in rivers, oceans, rainwater, wildlife, food, and even in remote regions far from urban areas or industrial sites.

    This new study reinforces the idea that exposure to PFAS is now almost unavoidable for many individuals.

    Most people carry multiple PFAS chemicals simultaneously, with about 98.5% of samples showing several chemicals together. This is significant because there is growing concern that mixtures of chemicals may affect the human body differently and potentially more severely than single chemicals.

    Many prior studies have focused on individual PFAS compounds, but real-life exposure often involves a combination of many. Researchers found dozens of different PFAS mixtures, with the most common containing five different chemicals, present in over 2,700 samples.

    Some of the most frequently detected chemicals include PFOS and PFOA, which were heavily used for years before safety concerns arose.

    Previous research links certain PFAS chemicals to serious health issues like cancer, infertility, thyroid problems, liver damage, weakened immune response, high cholesterol, and developmental issues in children.

    One chemical frequently identified, perfluorohexane sulfonic acid, has been associated with potential effects on immune function, liver health, and thyroid activity.

    Despite knowing some PFAS can be harmful, significant gaps remain because roughly 10,000 variants exist, most of which lack comprehensive study.

    Blood samples for this research were collected through NMS Labs, a leading independent testing laboratory in the U.S. They tested most samples for 13 PFAS chemicals, with some screened for as many as 18.

    Lead researcher Dr. Laura Labay explained that this study offers valuable insight into actual human exposure patterns. Understanding which PFAS combinations often appear together can help scientists better assess health risks and develop improved public health guidelines.

    The study also suggests that current exposure levels might be underestimated, as not all PFAS variants were tested.

    Over recent years, global concern about PFAS has surged. Contamination has been found in drinking water supplies near military bases, airports, factories, and industrial sites, locations heavily involved in firefighting foam and chemical manufacturing.

    Governments worldwide face increasing pressure to tighten regulations and remediate contaminated sites. Some PFAS chemicals have already been restricted or phased out in certain countries, yet many replacement chemicals are still in widespread use.

    One challenge with PFAS is their practical application; their unique chemical properties—resisting heat and water—have made them valuable to industry for a long time.

    Health experts say it may be impossible to eliminate personal exposure entirely because these chemicals are so widespread. However, steps like using water filters designed to remove PFAS, avoiding unnecessary stain- and water-resistant products, and limiting consumption of heavily packaged foods could help reduce individual exposure.

    The findings underscore the urgent need for more research into the combined effects of multiple PFAS chemicals over time, especially since environmental contamination can silently spread into daily life over decades.

    Future studies are needed to identify which PFAS mixtures pose the greatest health risks and whether long-term exposure to multiple chemicals increases disease likelihood.

    While the study does not establish causation, it strengthens the case that widespread PFAS exposure is a looming public health challenge. It also highlights the importance of stricter regulations and further scientific investigation to fully understand and mitigate associated risks.

  • Hidden Everyday Chemicals Associated with Increased Blood Cancer Risk

    Hidden Everyday Chemicals Associated with Increased Blood Cancer Risk

    Many everyday products contain chemicals that most people rarely consider. One such group is PFAS, a collection of synthetic substances used to make materials resistant to water, grease, and stains. Because they do not biodegrade easily, these chemicals can persist in the environment and accumulate in the human body for many years.

    Researchers are now investigating how early exposure to PFAS might impact children’s health. A recent study conducted by the University of California, Irvine’s Joe C. Wen School of Population & Public Health found that infants with higher levels of PFAS in their blood at birth may have an increased risk of developing acute lymphoblastic leukemia, the most common childhood cancer. Their findings were published in the Journal of Exposure Science & Environmental Epidemiology.

    Acute lymphoblastic leukemia affects white blood cells and can develop rapidly, requiring aggressive treatment. Although many children respond well to therapy, the disease remains potentially lethal, and its exact causes are not fully understood. To explore environmental influences, the researchers analyzed blood samples from newborns — providing a direct measure of chemical exposure right at the start of life.

    The study involved over 300 children born in Los Angeles County across 15 years, some of whom later developed leukemia while others remained healthy. By comparing the PFAS levels in these infants’ blood, the team discovered that several PFAS chemicals, notably PFOA and PFOS, were present at birth. Higher levels of these chemicals correlated with an increased likelihood of leukemia diagnosis during childhood, especially when both were found together.

    Beyond the well-known chemicals, the researchers detected numerous other PFAS compounds, some of which are not commonly monitored. The similar patterns observed suggest that the issue may be broader than initially believed. These findings support earlier research by the same team, which linked PFAS contamination in drinking water to increased cancer risks in California.

    It’s important to clarify that this study does not establish a direct cause-and-effect relationship between PFAS exposure and cancer. Instead, it highlights a significant association that warrants further investigation. Other factors like genetics or lifestyle might also influence these outcomes.

    There are limitations to consider, such as the relatively small number of participants and some uncertain results regarding differences between ethnic groups. Larger studies are necessary to confirm these initial findings. Nonetheless, the importance of measuring exposure early in life cannot be overstated, since this is a vital period when the body is still developing and potentially more vulnerable.

    These results raise critical questions about the broader impact of environmental chemicals on long-term health. Given that PFAS are present in many common products and can contaminate water, food, and everyday items, reducing exposure may require efforts at both individual and community levels.

    Overall, this research contributes to the growing understanding that early-life exposure to certain chemicals may influence the development of serious health conditions. While further research is essential, the findings emphasize the need for ongoing monitoring of environmental chemicals and strategies to protect children during their earliest stages of growth.

    If health is a concern, consider exploring studies about the main causes of inflammation in common bowel diseases and how vitamin B might help in fighting COVID-19 and reducing inflammation. Stay informed about new advances in managing excessive inflammation and learn which foods might trigger inflammatory responses.

    Source: University of California, Irvine.

  • Innovative ‘Nano Cage’ Removes PFAS Permanently from Drinking Water

    Innovative ‘Nano Cage’ Removes PFAS Permanently from Drinking Water

    Credit: Unsplash+.

    Toxic chemicals called PFAS have become a growing concern worldwide. Often referred to as “forever chemicals,” they resist breaking down in the environment, remaining intact for many years.

    Over time, PFAS can accumulate in water sources, soil, and even in humans. Researchers have detected these chemicals in rivers, groundwater, and drinking water supplies, raising significant health concerns over long-term exposure.

    PFAS are commonly used in numerous industries and consumer products. They are found in non-stick cookware, waterproof clothing, food packaging, and firefighting foam.

    Due to their durability, PFAS can travel long distances through water and persist for decades, making removal extremely challenging once they enter the environment.

    A major hurdle in addressing PFAS pollution is that different types react differently. For example, short-chain PFAS are smaller and more mobile, enabling them to move more freely through water systems and making it harder to remove with current treatment technologies.

    Research from Flinders University suggests an innovative approach to this issue. Published in *Angewandte Chemie International Edition*, the study introduces a new material designed to effectively trap these elusive chemicals.

    The team, led by Dr. Witold Bloch, developed a specialized material known as an adsorbent, which captures specific substances through attraction, similar to a sponge soaking up water. This new adsorbent surpasses traditional options in efficiency.

    At its core is a tiny nanoscale structure called a molecular cage. This cage is engineered to trap PFAS molecules within it. Unlike previous methods that only target surface binding, this approach draws PFAS molecules into the cage and holds them tightly, preventing their escape.

    The researchers found that this cage promotes the clustering of PFAS molecules, simplifying the trapping process. This is a notable improvement over older techniques, especially in capturing smaller PFAS variants.

    To make the technology viable, these cages were embedded into mesoporous silica, a material that alone does not effectively capture PFAS. Combined with the molecular cages, however, it becomes highly capable of removing a broad spectrum of PFAS from water.

    Laboratory testing yielded promising results, with the new material removing up to 98% of PFAS from simulated drinking water samples. Such performance indicates potential for application in actual water treatment facilities.

    An additional benefit is the material’s reusability. The researchers demonstrated it maintained high effectiveness after multiple cleaning cycles, which could significantly lower treatment costs and enhance practicality for large-scale deployment.

    The study also deepens understanding of how PFAS molecules bind at the molecular level. By analyzing these interactions within the cages, the scientists could refine the design for greater efficiency.

    However, these findings are preliminary. The experiments were conducted under controlled lab conditions, and further testing is needed to verify performance in real-world water treatment settings.

    This research marks an important advance in combating PFAS pollution, offering a novel method to address one of water treatment’s most persistent challenges. With continued development and validation, this technology could become a crucial tool in ensuring safer drinking water in the future.

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