- noun a vitamin found in vegetables, vegetable oils, eggs and wholemeal bread
- A fat-soluble vitamin (tocopherol) found in small quantities in soya beans, other seeds, butter, margarine (fortified), vegetables, whole grains, eggs and liver. It exists in several forms indicated by a Greek prefix, the alpha form being the most potent. It is a very powerful antioxidant and is vital for normal procreation and for cell processes. There is some evidence that it has anti-cancer activity. Natural sources are the best and though it has no known toxicity it may affect some medical conditions and supplements should only be taken on medical advice. deficiency diseases in otherwise normal humans have not been reported.