This is only one of many websites that shows how the fluoridation of our water is causing many problems not just kidney damage. This website shows how some reversed the damage by not drinking the fluoridated water. You may want to do a search on fluoridated water health effects as it was a real eye opener for me. Now I understand why chemists etc... are trying to get congress to stop the fluoridation of water. Selenium supplementation may be good for those who been using fluoridated water as fluoride binds to selenium.