NATIONWIDE (WAOW) -- Too much of a good thing might be wreaking havoc with the nation's tap water.
Fluoride -- thought to help, not hurt, our teeth is behind a growing epidemic.
Tooth decay now affects more than one in three children
The federal government wants to reduce the amount of fluoride to protect children from a tooth disease, Fluorosis, which stains and even erodes teeth.
"It affects as many as 40% of our children, says Dr. Howard Koh, Assist Health and Human Services Secretary. "We believe making this adjustment now will promote health, improve oral health and reduce rates of Fluorosis going forward." "
Fluorosis makes teeth become brittle or weak. You have to treat them with either crowns or new casings and it can be very costly. Some critics say Fluoride causes greater harm, like bone damage and increased risk of fractures.