Health
EU Food Safety Agency Lowers Safe Fluoride Intake Amid Concerns Over Children’s Brain Development
The European Food Safety Authority (EFSA) has issued new guidance lowering the safe daily intake of fluoride, amid growing concerns that even low levels of exposure may impact children’s brain development.
In a comprehensive reassessment, EFSA said there is currently no strong evidence of serious health risks from fluoride at levels typically found in EU drinking water. However, the agency acknowledged that new scientific findings suggest possible links between fluoride exposure and lower IQ in children, prompting it to lower recommended safety thresholds.
Fluoride is a naturally occurring mineral widely known for its role in preventing tooth decay. While only a few European countries, including Ireland and parts of Spain, actively add fluoride to public water supplies, the substance is present in roughly 90% of toothpaste brands. Most EU drinking water contains fluoride concentrations below 0.3 milligrams per litre (mg/L), well within the bloc’s legal limit of 1.5 mg/L and the same maximum recommended by the World Health Organization (WHO).
Despite these low levels, EFSA’s new review—which analyzed over 20,000 scientific studies—raises fresh questions. Experts reviewed fluoride’s potential effects on the developing brain, bones, thyroid function, and dental health through common sources such as water, food, fluoridated salt, and dental care products.
“We estimated that, in general, with the current concentrations of fluoride in European drinking water, total fluoride exposure does not pose a health concern,” said EFSA toxicologist Susanne Hougaard Bennekou. However, she noted that children aged four to eight who regularly swallow toothpaste could face mild tooth discoloration, particularly in their developing molars. “This is unlikely to occur if children spit the toothpaste out properly after brushing,” she added.
In response to the findings, EFSA introduced new safe daily intake thresholds:
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1 mg/day for infants under one year
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1.6 mg/day for toddlers aged one to three
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2 mg/day for children aged four to eight
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3.3 mg/day for older children and adults, including pregnant women
These new recommendations aim to protect against potential risks to brain development, thyroid function, and bone health. While they currently serve as part of a consumer safety guideline, they may influence future revisions to EU regulations on fluoride in drinking water.
Still, experts say more research is needed. “There is evidence that we can’t ignore linking fluoride to possible effects on the developing nervous system of the foetus,” said Thorhallur Halldorsson, chair of EFSA’s working group on fluoride. “But the evidence is not yet strong enough to set a definitive threshold.”
The findings could renew debate across Europe on the use of fluoride in public health, especially as governments weigh the benefits of dental protection against emerging concerns over long-term neurological effects.
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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