Vitamin E scavenges the body for harmful free radicals and annihilates them. By destroying cellular membranes, free radicals are responsible for a variety of health problems including Alzheimer's disease, atherosclerosis, cancer, diabetes, muscular dystrophy, Parkinson's disease and rheumatoid arthritis. Vitamin E defends all cell membranes in the body from oxidative stress, promoting better health and immunity from illness while increasing virility.