Abstract
It has been suggested that oxidative stress may contribute to the pathogenesis of Alzheimer's disease. Vitamin E is a potent antioxidant, and the results of some epidemiological studies have suggested that high intake of vitamin E through food is inversely associated with the incidence of Alzheimer's disease. Randomized controlled studies have shown that treatment with vitamin E could delay functional decline in patients with mild to moderate Alzheimer's disease. However, vitamin E had no cognitive benefits in patients with mild cognitive impairment or in generally healthy older women. Well-designed clinical trials or preventive interventions with vitamin E are necessary to establish its efficacy as therapeutic or preventive agents for Alzheimer's disease.
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