Hi folks: I just pulled this excerot from an ariticle on medscape (www.medscape.com). You learn something new everyday. I thought that hydrogen peroxide was just something you keep in the medicine cabinet. Ron Reiner ([log in to unmask]) 48 + 9 mos ---------------------------------------------------------------------------- The new study also may shine light on why people who smoke are less likely to develop Parkinson's disease. By keeping levels of MAO-B low, smoking also reduces brain levels of hydrogen peroxide, an MAO-B by-product that can damage brain cells, the researchers explained. This damage could eventually lead to Parkinson's disease, they said. Generally, smokers have about half the risk of Parkinson's disease as non-smokers, according to the editorial, written by Alexander Glassman of Columbia University in New York and George Koob of the Scripps Research Institute in La Jolla, Calif. More information on this story is scheduled to appear in the following issues of Medical Tribune: the March 21 Internist & Cardiologist, Family Physician and Obstetrician & Gynecologist editions.