Fluoride is not a nutrient. Its sole benefit is topical. Swallowing it can cause harm. 41% of American children, aged 12-15, have dental fluorosis, indicating over-exposure. Minorities are disproportionally harmed (CDC, 2005, 2010). An unrefuted study indicates fluoride is a risk factor for bone cancer in boys (Bassin, 2006). There is mounting evidence that fluoride is an endocrine disruptor, lowers IQ, and accumulates in bone, increasing joint pain and the risk of fractures (NRC, 2006). Vulnerable subgroups include bottle-fed infants, the elderly, those with kidney disease, diabetics, and minorities (NRC, 2006). The chemicals used are contaminated industrial by-products and never approved by the FDA. (FluorideAlert.org)