Recent research published in JAMA Pediatrics has reignited the discussion surrounding fluoride exposure and its potential effects on children's IQ. This new study, along with six previous meta-analyses, indicates a correlation between higher fluoride levels and lower IQ scores in children. The study, conducted across ten countries outside the U.S., analyzed data on fluoride in drinking water and urine samples, revealing a statistically significant link. Specifically, for every 1mg/L rise in urinary fluoride, a 1.63-point decrease in IQ was observed.

While the World Health Organization sets the upper safe limit of fluoride in drinking water at 1.5mg/L, the U.S. Public Health Service recommends a lower concentration of 0.7 mg/L. However, the study lacked sufficient data to determine the impact of this lower level on children's IQ. Concerningly, nearly three million people in the U.S. rely on well and community water sources with fluoride levels exceeding the WHO's recommendations.

In light of these findings, pregnant women and parents are urged to monitor their children's fluoride intake. Opting for low-fluoride bottled water, especially when preparing infant formula, and limiting the use of fluoridated toothpaste for young children are recommended precautions.

Dr. Ellie Phillips, a dental health expert, voices her opposition to public water fluoridation, citing examples of non-fluoridated communities with excellent oral health. She highlights the ongoing debate about fluoride, even within the dental profession. While the American Dental Association supports fluoride use for cavity prevention, some holistic dentists advise against it entirely. Dr. Phillips emphasizes the distinction between topical and systemic fluoride, suggesting that while topical application can be beneficial, ingestion carries potential risks.

She advocates for individuals to take control of their oral health through natural and informed approaches. This renewed focus on fluoride's impact underscores the importance of ongoing research and informed decision-making regarding oral health practices.