A recent study explored the impact of fluoride exposure during early childhood on cognitive neurodevelopment. Conducted by researchers from The University of Queensland, this study aimed to provide high-quality evidence regarding the safety of fluoride in drinking water, a practice widely implemented to prevent tooth decay.

 The study analyzed data from the National Child Oral Health Study (NCOHS) 2012-14, focusing on fluoride exposure during the first five years of life and its potential effects on intelligence quotient (IQ). Dental fluorosis, a biomarker of fluoride intake, was also examined to establish accurate exposure levels.

 Researchers assessed the cognitive abilities of 357 participants aged 16-26 using the Wechsler Adult Intelligence Scale (WAIS-IV). The results showed no significant difference in IQ scores between individuals with high and low fluoride exposure, confirming that fluoride does not harm cognitive development.

 The findings indicated that early exposure to fluoridated water slightly improved IQ scores, with participants exposed to higher levels of fluoride performing equivalently or slightly better than others. Hypotheses of non-inferiority were confirmed, ensuring the safety of fluoride.

This study reassures public health officials and the general population about the safety and benefits of fluoride in drinking water. While addressing concerns, it reinforces the role of fluoride as a safe and effective tool in improving oral health without affecting cognitive development.