Bombshell government report says high levels of fluoride in water is linked to low IQ in children - as map reveals counties at risk READ MORE: UK expands controversial scheme to put fluoride in tap water By Luke Andrews Senior Health Reporter For Dailymail.Com Published: 11:26 EDT, 22 August 2024 | Updated: 11:39 EDT, 22 August 2024 e-mail 29 shares 2 View comments Hundreds of thousands of American children are drinking from tap water that may be lowering their IQs, according to a bombshell government report. The paper — described as the most thorough of its kind — concluded that consuming high levels of fluoride can harm brain development in youngsters.

Researchers found drinking water with more than 1.5 milligrams of fluoride per liter was associated with a drop in IQ of up to five points. The finding could be significant, given more than 1.

9million people rely on water systems with fluoride levels above 1.5mg, the report said. Based on an analysis of previously published research, the report marks the first time a federal agency has determined 'with moderate confidence' that there is a link between fluoride and IQ.

The above map shows estimated fluoride concentrations in community water systems between 2006 and 2011. It was published in 2023. Counties that are colored red have more than double the recommended level of fluoride in their water Fluoride has been added to the US water supply for decades after studies showed it could strengthen teeth and reduce cavities —.