Vitamin E can prevent ageing

False. This idea is an example of how theory does not necessarily work out in practice. Vitamin E is an antioxidant. It ought to be possible for it to reduce formation of 'free radicals' which can damage tissues in a way which might equate with ageing.

Currently, there is no good evidence that either the level of vitamin E intake from food or an increase in intake from supplements, alters the ageing process. One questionnaire study revealed no protection against ageing in people who took vitamin E supplements. To resolve this question further scientific studies are needed. A difficulty in such work is that vitamin E in food is usually found in association with polyunsaturated fat, and it is difficult to decide whether an observed effect is due to vitamin E, polyunsaturated fat, or both.