Health
Children exposed to higher fluoride levels found to have lower IQs, study reveals
The debate about the benefits and risks of fluoride is ongoing, as RFK Jr. — incoming President Trump’s pick for HHS secretary — pushes to remove it from the U.S. water supply.
“Fluoride is an industrial waste associated with arthritis, bone fractures, bone cancer, IQ loss, neurodevelopmental disorders and thyroid disease,” RFK wrote in a post on X in November.
A new study published in JAMA Pediatrics on Jan. 6 found another correlation between fluoride exposure and children’s IQs.
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Study co-author Kyla Taylor, PhD, who is based in North Carolina, noted that fluoridated water has been used “for decades” to reduce dental cavities and improve oral health.
Fluoride exposure has been linked to a variety of negative health effects, yet benefits oral health. (iStock)
“However, there is concern that pregnant women and children are getting fluoride from many sources, including drinking water, water-added foods and beverages, teas, toothpaste, floss and mouthwash, and that their total fluoride exposure is too high and may affect fetal, infant and child neurodevelopment,” she told Fox News Digital.
The new research, led by scientists at the National Institute of Environmental Health Sciences (NIEHS), analyzed 74 epidemiological studies on children’s IQ and fluoride exposure.
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The studies measured fluoride in drinking water and urine across 10 countries, including Canada, China, Denmark, India, Iran, Mexico, Pakistan, New Zealand, Spain and Taiwan. (None were conducted in the U.S.)
The meta-analysis found a “statistically significant association” between higher fluoride exposure and lower children’s IQ scores, according to Taylor.
“[It showed] that the more fluoride a child is exposed to, the more likely that child’s IQ will be lower than if they were not exposed,” she said.
Scientists found a “statistically significant association” between higher fluoride exposure and lower children’s IQ scores. (iStock)
These results were consistent with six previous meta-analyses, all of which reported the same “statistically significant inverse associations” between fluoride exposure and children’s IQs, Taylor emphasized.
The research found that for every 1mg/L increase in urinary fluoride, there was a 1.63-point decrease in IQ.
‘Safe’ exposure levels
The World Health Organization (WHO) has established 1.5mg/L as the “upper safe limit” of fluoride in drinking water.
“There is concern that pregnant women and children are getting fluoride from many sources.”
Meanwhile, the U.S. Public Health Service recommends a fluoride concentration of 0.7 mg/L in drinking water.
“There was not enough data to determine if 0.7 mg/L of fluoride exposure in drinking water affected children’s IQs,” Taylor noted.
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Higher levels of the chemical can be found in wells and community water serving nearly three million people in the U.S., the researcher noted.
She encouraged pregnant women and parents of small children to be mindful of their total fluoride intake.
Nearly three million people have access to wells and community water with fluoride levels above the levels suggested by the World Health Organization. (iStock)
“If their water is fluoridated, they may wish to replace tap water with low-fluoride bottled water, like purified water, and limit exposure from other sources, such as dental products or black tea,” she said.
“Parents can use low-fluoride bottled water to mix with powdered infant formula and limit use of fluoridated toothpaste by young children.”
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While the research did not intend to address broader public health implications of water fluoridation in the U.S., Taylor suggested that the findings could help inform future research into the impact of fluoride on children’s health.
Dental health expert shares cautions
In response to this study and other previous research, Dr. Ellie Phillips, DDS, an oral health educator based in Austin, Texas, told Fox News Digital that she does not support water fluoridation.
The study researcher encouraged parents of small children to be mindful of their total fluoride intake. (iStock)
“I join those who vehemently oppose public water fluoridation, and I question why our water supplies are still fluoridated in the 21st century,” she wrote in an email.
“There are non-fluoridated cities and countries where the public enjoy high levels of oral health, which in some cases appear better than those that are fluoridated.”
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Phillips called the fluoride debate “confusing” even among dentists, as the American Dental Association (ADA) advocates for fluoride use for cavity prevention through water fluoridation, toothpaste and mouthwash — “sometimes in high concentrations.”
Fluoride is used in water, toothpaste and mouthwash to help prevent cavities. (iStock)
“[But] biologic (holistic) dentists generally encourage their patients to fear fluoride and avoid its use entirely, even if their teeth are ravaged by tooth decay,” she said.
“Topical fluoride is beneficial, while systemic consumption poses risks.”
Phillips encouraged the public to consider varying fluoride compounds, the effect of different concentrations and the “extreme difference” between applying fluoride topically and ingesting it.
“Topical fluoride is beneficial, while systemic consumption poses risks,” she cautioned.
“Individuals must take charge of their own oral health using natural and informed strategies.”
The study received funding from the National Institute of Environmental Health Sciences (NIEHS), the National Institutes of Health (NIH) and the Intramural Research Program.
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Washington, DC – GLP-1 weight-loss drugs have become a prevalent part of American healthcare, and the current administration is getting behind the movement.
In an exclusive interview with Fox News Digital at the Great American State Fair in the nation’s capital on July 6, CMS Administrator Dr. Mehmet Oz voiced his support for the use of GLP-1 (glucagon-like peptide-1) medications, such as Ozempic, for appropriate uses.
“I’m a fan of GLP-1 drugs when used correctly,” he said. “They do help people who are overweight lose weight quite effectively. They’re not a replacement for diet and exercise, but they might jumpstart the system so it’s easier for you to use healthier tactics.”
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This is especially helpful for those who may have trouble moving due to joint pain or are experiencing internal dysfunction, Oz said.
Certain GLP-1 drugs are covered by Medicare for overweight candidates with certain conditions, such as high blood pressure and diabetes, and Oz projected the benefits will continue to benefit taxpayers.
Dr. Mehmet Oz is pictured in Washington, D.C., at the Great American State Fair, where he spoke about federal health policy. (Angelica Stabile/Fox News Digital)
“We believe these are so effective in reducing conditions like high blood pressure and diabetes that they’ll actually save money for the federal taxpayer, because [they’re] going to make you healthy enough that you don’t have to consume health services,” Oz said.
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“We think about 70% of all the money we spend on healthcare is caused by chronic conditions, and obesity is the No. 1 driver of all that, so it’s a smart decision.”
Oz recently announced the launch of the Medicare GLP-1 Bridge program, which will allow more seniors to access GLP-1 drugs for only $50 a month if they meet qualifying health criteria and receive prior authorization from a doctor.
The doctor expressed support for broadening affordable access to GLP-1 medications for Americans. (iStock)
“There are a lot of overweight people who don’t have high blood pressure, diabetes or other conditions, so they don’t get access to the drug normally,” he said. “We want them to have the ability to use it as well.”
Although these access shifts could boost Americans’ overall health — and in some cases could be lifesaving — Oz noted that there is “no silver bullet” when it comes to these medications.
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“I love the fact that the innovation that’s coming out of pharmaceutical companies is allowing us to save lives and make lives better,” he said. “But the real secret to longevity is eating right, exercising, sleeping, dealing with the stress of your life, finding some purpose in your existence [and] realizing you have agency over the future.”
“These are things that your mom would have told you [and that] you don’t need a doctor to be emphasizing.”
Medicating appropriately, combined with eating right, exercising and staying connected with others, can help make health goals attainable, the doctor said. (iStock)
While GLP-1s may not be a fix-all, combining these medications with foundational health practices “makes a lot of sense,” Oz said.
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“I don’t want people being fat-shamed … I don’t want you feeling guilty that you’re gaining weight even though everyone else around you seems to have figured it out,” he said. “It’s not that simple — our set points for hunger are different. We have different things going on in our lives.”
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“But if you realize how precious you are — the temple of the soul is so valuable. It’s the greatest gift your parents ever gave you, and you take advantage of every tool out there to make it work … which includes using medications when appropriate. That, to me, is MAHA.”
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Amid warnings of a Legionnaires’ disease outbreak on Manhattan’s Upper East Side, health experts say that early recognition of symptoms can mean the difference between a quick recovery and life-threatening complications, especially for high-risk groups.
New York City health officials are urging anyone who has visited the east side of Central Park or Manhattan’s Upper East Side since late June to watch for symptoms.
As of July 6, the New York City Health Department had confirmed 23 cases and 17 hospitalizations associated with the respiratory infection. No deaths have been reported.
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Officials are investigating contaminated cooling towers as the likely source. They have emphasized that the illness is not spread person-to-person and is not linked to the city’s drinking water.
Health experts say that early recognition of symptoms can mean the difference between a quick recovery and life-threatening complications, especially for high-risk groups. (iStock)
“Legionnaires’ disease is deadly but can be effectively treated if diagnosed early,” said NYC Health Commissioner Dr. Alister Martin in a press release. “New Yorkers at higher risk, including anyone who is 50 and older, those who smoke or people with chronic lung conditions should be especially mindful of their symptoms and seek care as soon as symptoms begin.”
What is Legionnaires’?
Legionnaires’ disease is a type of pneumonia caused by Legionella bacteria.
The bacteria is usually found in lakes, streams and other freshwater environments, but can grow in any area where water sits for a long time, according to the CDC.
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That can include shower heads, sink faucets, hot tubs, water features/fountains, plumbing systems and other water systems.
When people swallow or breathe in droplets of water that contain Legionella, they can potentially become ill.
Although human transmission is possible in rare cases, the disease is not typically transmitted among people, per the Centers for Disease Control and Prevention.
Symptoms of infection
Infections can lead to severe pneumonia in older people and those with compromised immune systems, according to Dr. Andrew Handel, a pediatric infectious diseases expert at Stony Brook Children’s Hospital on Long Island, New York.
Symptoms of Legionnaires’ disease usually show up between two and 14 days after exposure.
New York City health officials are urging anyone who has visited the east side of Central Park or Manhattan’s Upper East Side since late June to watch for symptoms. (iStock)
“Legionella infections cause symptoms that are similar to other forms of pneumonia — fever, coughing, difficulty breathing, shortness of breath and chest pain,” Handel previously told Fox News Digital.
“Legionnaires’ disease is deadly but can be effectively treated if diagnosed early.”
The signs are similar to other types of pneumonia, and include the following:
- Cough
- Fever
- Shortness of breath
- Muscle aches and headaches
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Some patients may also experience nausea, diarrhea and confusion, the CDC noted.
Diagnosis, treatment and prevention
A medical professional can diagnose the infection with laboratory tests and chest X-rays.
The condition is typically treated with antibiotics. In cases of severe infection, hospitalization may be required for breathing support and IV hydration.
Around 10% of people who contract Legionnaires’ disease will die from those complications — and the mortality risk rises to 25% for those who get Legionnaires’ while staying in a healthcare facility, according to the CDC.
The bacteria is usually found in lakes, streams and other freshwater environments, but can grow in any area where water sits for a long time, according to the CDC. (iStock)
“Treatment needs to be early and aggressive,” Dr. Nathan Goodyear, an Arizona-based integrative medicine expert, previously told Fox News Digital. “Legionella infection is an intracellular infection that requires antibiotic treatment.”
Antibiotics that are appropriate for Legionella infection include Levofloxacin and Azithromycin.
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“Therapy can be prescribed orally in healthy individuals… but intravenous antibiotics often prove to be the initial option for treatment secondary to the pathogenicity of the disease,” Goodyear said.
Currently, there are no vaccines for Legionnaires’ disease.
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The best strategy to prevent infection is to reduce the growth and spread of the Legionella bacteria. The CDC recommends that building owners and managers use a water management program to reduce the risk.
“New Yorkers at higher risk, including anyone who is 50 and older, those who smoke or people with chronic lung conditions should be especially mindful of their symptoms and seek care as soon as symptoms begin,” city officials stated. (iStock)
To prevent serious illness from Legionnaires’, Goodyear recommends that all smokers kick the habit, and also emphasizes the need to “aggressively support” chronic pulmonary disease.
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“Increasing immune support (vitamin D3, vitamin C, Zinc) is required to counter the immune dysfunction associated with advancing age.”
Obesity is another foundational risk factor for all chronic inflammatory diseases, the doctor added.
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Journalist Katie Couric is sharing a scary medical episode that she experienced on June 27.
In a post on Substack titled “The Day I’ll Never Remember,” she detailed a sudden episode that left her unable to recall the current month, year and president.
“I thought it was 2024. And I believed Joe Biden was president,” she wrote.
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The event occurred while Couric was attending the Aspen Ideas Festival in Colorado, during which she participated in two public panels — one on AI and one on journalism — both of which she cannot remember at all.
“I have no idea what we talked about, or of what occurred when the panels ended,” she said.
Journalist Katie Couric is sharing a scary medical episode that she experienced on June 27. (Getty Images)
John Molner — Couric’s husband, who was in attendance at the festival and the two panels — also shared his account.
After the event, someone told Molner that Katie wasn’t feeling well. When he reached her, an EMT and a doctor were tending to her. “I could tell something was off,” he wrote. “It could have been altitude sickness, but Katie was definitely not all there.”
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At the hospital, when Couric struggled to recall the year, the president and her grandchildren’s names, doctors began checking for a stroke.
An MRI revealed no signs of stroke, which was a relief, but “Katie’s ‘fog’ became a lot more apparent,” Molner wrote.
John Molner, Couric’s husband, who was in attendance at the festival and the two panels, also shared his account. (Getty Images)
“She repeatedly asked me the same questions: ‘What was I doing before we got to the hospital?’ ‘Why am I at the hospital?’”
Couric was ultimately diagnosed with transient global amnesia, a sudden, temporary episode of memory loss that prevents a person from forming new memories and may also erase some recent memories, according to Mayo Clinic.
“The cause seems to be as mysterious as the brain itself.”
It is not caused by a stroke, seizure or head injury, and it usually resolves completely within 24 hours.
“[It’s] just a very weird neural episode that’s pretty uncommon and, at least in most cases, is a ‘one and done’ experience,” Molner said.
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Couric said she finally began feeling “like herself” again around 9 p.m. and went to sleep at 2 a.m.
As TGA leaves a “permanent gap in memory” for the duration of the episode and for hours beforehand, Couric said that from around noon on that day until at least 7 p.m. will remain a “big, black hole.”
As TGA leaves a “permanent gap in memory” for the duration of the episode and for hours beforehand, Couric said that from around noon on that day until at least 7 p.m. will remain a “big, black hole.” (Getty Images)
Data shows that approximately three to eight people per 100,000 will have an episode of transient global amnesia, with people 50 years of age and older at higher risk.
The specific cause of TGA is not known, but some experts believe it stems from a “temporary dysfunction in the brain’s hippocampus — the area responsible for creating new memories,” Couric shared.
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“Doctors believe this is driven by brief interruptions in blood or oxygen flow, or microscopic spasm in the blood vessels.”
Episodes could potentially be triggered by intense physical exertion, emotional distress, extreme temperature changes or migraines, experts say.
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Approximately 15% of patients will have a recurrence 10 years later.
“Why did this happen to me? Was the altitude an issue? Was I dehydrated? Tired? Stressed? The literature doesn’t seem to indicate that these are contributing factors, but the cause seems to be as mysterious as the brain itself,” Couric wrote.
Anyone who experiences sudden memory loss, confusion, difficulty speaking, weakness, numbness, vision changes, severe headache or other stroke-like symptoms should seek immediate medical attention or call 911, doctors advise. (iStock)
“All I know is that those hours will be forever lost. Someone described it as my brain failing to hit the ‘record button.’”
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“While this was a freaky occurrence, it could have been much more serious. So ultimately, I’m relieved — even though several hours of a Saturday in June will always be missing for me.”
Anyone who experiences sudden memory loss, confusion, difficulty speaking, weakness, numbness, vision changes, severe headache or other stroke-like symptoms should seek immediate medical attention or call 911, doctors advise.
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