Vitamin C can concentrate in the tissue and fluid around the brain and nerves. It is able to pass through the blood brain barrier, and in fact, Vitamin C levels are ten times higher in tissue than in plasma. When you realize that Vitamin C is not only a great antioxidant but also has the ability to regenerate Vitamin E and glutathione, it becomes a very important nutrient in protecting brain and nerve cells.
Dr. M.C. Morris reported a study showing that Vitamin C & Vitamin E given in supplementation to normal patients over the age of sixty five actually decreased their risk of developing Alzheimer’s dementia. This was a small study and larger, more aggressive studies need to be done.