New research shows fluoride exposure has no negative effects on child development

The study used data from Australia’s National Child Oral Health Study of 2012-14. A baseline was established when the children were between five and 10 years old. The children were contacted again after seven to eight years before they turned 18 years old.

Lifetime estimated exposure to fluoridated water from birth to five years old was calculated from fluoride levels in tap water based on residential history.

Researchers used a Strength and Difficulties Questionnaire (SDQ) to access the children's emotional and behavioural development. A Behaviour Inventory of Executive Functioning (BRIEF) test was also conducted to evaluate executive functioning.

The data showed that there was no association between fluoridated water exposure and the SDQ and BRIEF scores. However, children from low-income households and those with neurodevelopmental diagnoses had poorer SDQ and BRIEF scores.