Fluoride has become a controversial additive to our drinking water. While no one denies it can prevent cavities with topical application, a growing number of people, cities and countries have decided that ingesting unknown quantities of fluoride is a bad idea. One of Tennessee's own top health risk scientists is asking Gov. Phil Bredesen to stop adding fluoride to the water. Dr. Kathy Thiessen makes a living assessing health risks and has worked for the Center for Disease Control and Prevention and the Environmental Protection Agency. The deliberate exposure to uncontrolled and unmonitored intake of fluoride is unwise at best and probably harmful to a substantial number of people," Thiessen said. Thiessen joins Tennessee lawmaker and medical doctor Joey Hensley as the most prominent Tennessee voices against fluoride. Chris White is a musician with the band Loft, but his other passion is removing fluoride from Gallatin's water supply. "All parties point to the American Dental Association recommending that mothers stop using fluoridated water for baby formula as an obvious sign that fluoride is obviously not for everyone," he said.