Dopamine is a brain chemical that transmits signals to muscles throughout your body but people with Parkinson’s disease, the cells that make dopamine are damaged or destroyed. Scientists believe that Parkinson’s disease is caused, in part, by harmful oxygen molecules called free radicals. These molecules, that are missing electrons, stealing electrons wherever they can find them. In the process, they may damage dopamine-producing cells in the brain, One of the best ways to stop this damage is to get more antioxidant vitamins, especially vitamins C and E, in your diet. Fresh and washed raw vegetables and fruits are good source of antioxidants.