Israel's legal way to poison your water Israel is the second largest exporter of water fluoridation chemicals in the world. Israel does not add fluoride to water for safety reasons. Fluoride, especially in high exposure, causes a decrease in children's IQ according to a scientific study conducted by the American Ministry of Health. Fluoride causes "dental fluorosis", a change in the enamel that can lead to serious dental problems (Fluoride causes "skeletal fluorosis", a disease that weakens the bones and makes people more prone to fractures (Fluoride, in large concentrations, crosses the placenta of pregnant women and causes negative effects on the nerve development of unborn children.