Did you know that pairing vitamins C and E may lessen your Alzheimer's risk by as much as 64%? According to experts, just 500 milligrams of C and 400 IU of E appear to be enough. These antioxidants may act as shields to the brain's high fat content that make it vulnerable to free radicals. Some studies suggest that it is the E that does the job of reducing free radicals in the body, but then it's capacity is depleted. Vitamin C may recharge E. Talk to your doc about your risks for Alzheimer's and dementia and about taking both supplements.