Health
'Forever chemicals' found in US drinking water, map shows 'hot spots' of highest levels
The risk of having potentially harmful chemicals in your drinking water may depend on your zip code.
A study published in the journal Nature Geoscience on April 8 found that higher amounts of PFAS (perfluoroalkyl substances) were found in drinking water in certain parts of the U.S.
PFAS — also known as “forever chemicals” due to how slowly they break down — are a group of chemicals used during industrial processes and the manufacturing of consumer products.
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Two of the main chemicals are perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS).
There are many ways people can be exposed to these chemicals — including in drinking water.
A study published in the journal Nature Geoscience on April 8 found that higher amounts of PFAS (perfluoroalkyl substances) were found in drinking water in certain parts of the U.S. (Nature Geoscience)
To determine the prevalence of PFAS in the environment, researchers from the University of New South Wales (UNSW) in Sydney analyzed a global dataset of 273 studies dating back to 2004.
The studies included data for over 12,000 samples of surface water (water that collects on the ground) and more than 33,900 samples of groundwater (water found underground, below the surface).
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“We looked everywhere for PFAS concentrations in water data, including scientific journals and governmental reports and websites,” Denis O’Carroll, a UNSW engineering professor and senior author of the study, told Fox News Digital.
“We compared PFAS concentrations in these water samples to international regulations. We also compared the types of PFAS analyzed to what we found in consumer products.”
The studies included data for over 12,000 samples of surface water (water that collects on the ground) and more than 33,900 samples of groundwater (water found underground, below the surface). (iStock)
Nearly 70% of the samples had levels of PFAS that exceeded Canada’s minimum safety standards (30 nanograms per liter), while 6% had more chemicals than the European Union’s standard (100 ng per liter), according to the study findings.
In the U.S., PFAS “hot spots” were concentrated in the Midwest, New England and the West Coast, according to a map illustrating the findings — although the chemicals were also detected in other areas across the country.
Globally, Australia, Europe and China showed high levels.
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“To date, nobody has looked at the global extent of PFAS in our waters and compared it to international drinking water standards,” noted O’Carroll.
“Our study found that a substantial fraction of sampled waters exceeded PFAS drinking water guidance values, with the extent of exceedance depending on the jurisdiction and PFAS source.”
Health risks of PFAS
Dr. Mark Fischer, regional medical director of International SOS, a health and security risk mitigation company headquartered in London, pointed out that most Americans also have these chemicals in their blood.
“Although the use of these chemicals has declined in recent years, they are difficult to break down, so they are still found in some food, water and consumer products, as well as within the soil and the environment,” Fischer, who was not involved in the UNSW study, told Fox News Digital.
Health risks associated with PFAS include cancers, elevated liver enzymes, lower birth weight, heart issues and higher cholesterol. (iStock)
Most people in the U.S. have been exposed to these chemicals, most likely through contaminated food or their drinking water, according to the Centers for Disease Control and Prevention.
Health risks associated with PFAS include cancers, elevated liver enzymes, lower birth weight and higher cholesterol, Fischer said.
“PFAS contamination has been identified in drinking water in all 50 states.”
Other potential dangers include heart issues, plus immune and developmental damage, according to the Environmental Protection Agency (EPA).
“PFAS contamination has been identified in drinking water in all 50 states, according to the Environmental Working Group,” Fischer said.
“That said, the levels of these chemicals vary throughout states and cities.”
Study limitations
The study did have some limitations, the researchers acknowledged.
“We have measured a much wider range of PFAS in consumer products than in our waters,” said O’Carroll.
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“As such, we don’t really have a great idea of the range of PFAS in our waters.”
The data was also limited to what the researchers could find, he noted.
“Just because we can cheaply use a chemical doesn’t mean we should.”
“While we had data for over 45,000 water samples, even more data would be useful, especially for parts of the world where we had limited data.”
The actual amount of PFAS in water could be higher than what the study results imply, O’Carroll added.
Most people in the U.S. have been exposed to PFA chemicals, most likely through contaminated food or their drinking water, according to the Centers for Disease Control and Prevention. (iStock)
“Current monitoring practices probably underestimate PFAS in the environment, given the limited suite of PFAS that are typically quantified but deemed of regulatory concern,” he said.
These are just one of the many types of chemicals that are used in daily life, O’Carroll noted.
“As a society, we need to consider the chemicals we use and reduce our use of some,” he advised.
“Just because we can cheaply use a chemical doesn’t mean we should.”
Latest PFAS regulations
On April 10, the EPA finalized new limits on the amount of PFAS permitted in drinking water.
The new standards could reduce exposure for 100 million people, potentially preventing thousands of deaths and tens of thousands of serious illnesses, the agency said in a news release.
On April 10, the EPA finalized new limits on the amount of PFAS permitted in drinking water. (Pavlo Gonchar/SOPA Images/LightRocket via Getty Images)
This is the “first-ever national, legally enforceable drinking water standard” to protect people from the health risks of PFAS, the agency stated.
The 66,000 public drinking water systems in the U.S. will have three years to reduce PFAS levels to meet the new standards, according to the release.
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The EPA also announced $1 billion in new funding, provided through the Bipartisan Infrastructure Law, to enable PFAS testing and treatment of public water systems and private wells.
Fox News Digital reached out to the EPA and the American Water Works Association for comment.
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Doctor reveals what 30 days without alcohol does to the brain and body amid Dry January
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After a season of bingeing and drinking, your body may feel like it needs a break from the party.
Dry January — a modern trend that challenges people to abstain from drinking for the first month of the year — has become a popular way to “detox” from the holidays and start the new year on a healthy note.
Research has linked alcohol to a variety of health conditions, ranging from hangovers to higher cancer risk.
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In a recent podcast episode of “The Dr. Mark Hyman Show,” Dr. Mark Hyman, chief medical officer of Function Health, shared how 30 days of not drinking alcohol can transform health.
Hyman, who is based in Massachusetts, called Dry January a “powerful way to see in real time how alcohol affects nearly every system of your body and how quickly those systems can recover.”
Dry January has become a popular way to “detox” from the holidays and start the new year on a healthy note. (iStock)
Alcohol’s toll on the brain and body
Hyman acknowledged that most people drink to feel happier and more comfortable in social situations. This effect is caused by the main ingredient in alcohol, called ethanol, which can also have toxic effects.
Instead of stimulating the brain, alcohol slows it down and loosens inhibitions. “You feel more relaxed, more social, more confident, maybe you feel a little euphoric,” Hyman said.
Alcohol’s effect on the brain can also lead to poorer decisions and slower reflexes, the doctor cautioned.
Drinking alcohol can cause cognitive decline and brain fog, experts warn. (iStock)
Drinking also impacts the prefrontal cortex of the brain, which Hyman described as “the adult in the room,” responsible for judgment, planning and restraint. “It goes offline early in drinking, which explains why people feel freer or act impulsively when they drink,” he said.
Even moderate drinking can cause metabolic stress, inflammation, impaired detoxification and hormonal shifts, Hyman said, which can impact nearly every organ system in the body.
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Alcohol consumption has also been linked to an increased risk of cancer, metabolic dysfunction, gut microbiome disturbances and mitochondrial toxins.
It can also prevent the body from falling into REM sleep, which is the deep rest recovery period when the immune system cleans out the day’s toxins, according to Hyman.
Alcohol can impact deep rest and mental health, according to experts. (iStock)
Memory loss, cognitive decline, anxiety, sleep disruption, dementia and cardiovascular disease are all known risks of long-term alcohol use, as well as liver complications like fatty liver disease.
“Bottom line, alcohol taxes every major system in your body, especially your liver, your brain, your gut, your hormones,” Hyman said.
The effects of 30 days with no alcohol
The first week after your last drink, the body begins to detoxify and reset, according to Hyman. Blood sugar and cortisol stress hormones level out, and the liver begins to process a “backlog of toxins.” The body also re-hydrates and re-energizes.
The first 30 days with no alcohol allows the body to balance itself out. (iStock)
The second week, the gut and brain will begin to re-balance, as hormones like serotonin and dopamine stabilize, gut inflammation drops and the microbiome begins to heal. Cravings for sugar and alcohol will wane and mental clarity returns, the doctor said.
Week three is marked by further decreases in inflammation, fatty liver and blood pressure. This can be noticeable in the skin, as puffiness and redness are reduced. Mood also begins to stabilize, with lower anxiety levels.
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In week four, the body experiences additional metabolic and immune benefits, Hyman shared, including more insulin sensitivity, which makes it easier to lose weight.
“You have a stronger immune response. You’re not getting sick as much. You have better deep sleep, balanced hormones, especially cortisol and testosterone,” he said. “And you see a big change in energy, confidence and focus.”
Abstaining from alcohol can help restore energy, according to experts. (iStock)
Dr. Pinchieh Chiang, a clinician at Circle Medical in San Francisco, said that Dry January isn’t a “detox,” but rather provides “feedback” from the body.
“It gives the body time to show people how it feels without alcohol. For many, that insight alone changes their relationship with drinking,” she said. “The biggest surprise isn’t what people give up, it’s how much better they feel.”
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The doctor confirmed that the first few days of not drinking may feel harder than expected, sometimes causing restlessness, cravings or disrupted sleep, but Dry January can ultimately change drinking habits for the remainder of the year.
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After a full year without alcohol, Chiang noted that health improvements are more profound. “We see sustained improvements in blood pressure, liver function and inflammation,” she said. “Those changes directly affect long-term heart disease and stroke risk.”
The risks of ‘all or nothing’
Some experts warn that adopting the Dry January trend could strengthen the urge to drink more in the other months, noting that some drinkers may find more success by slowly consuming fewer drinks per week.
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Thomas Stopka, Ph.D., an epidemiologist and professor in the public health and community medicine department at Tufts University School of Medicine in Massachusetts, shared in a Futurity report that for some people, “damp January” may be more suitable.
One expert warned that not all drinkers should quit “cold turkey,” as it could lead to severe withdrawals. (iStock)
“Dry January is well-intentioned, and it may work really well for the people who can stick to it, maybe even beyond January,” he said. “Other people may be more inclined to cut down on alcohol consumption rather than quit drinking completely for the month.”
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Stopka noted that successful harm-reduction approaches “aim to be judgment free.”
“Substance use disorder is a disease,” he said. “It takes time to treat the disease and to stay connected to the continuum of care — from prevention to treatment initiation to sustained therapy, whether through medication, self-help, or individual therapy or group support.”
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Those struggling with signs of alcohol use disorder should consult a medical professional for personalized guidance.
Fox News Digital reached out to several alcohol industry associations requesting comment.
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