Harvard Health Letter

Vitamin E: Separate and unequal?

Some types of the vitamin may be more healthful than others.

Because of its antioxidant properties, as well as some evidence from observational trials, experts thought taking large doses of vitamin E might offer some protection against many contemporary scourges: heart disease, stroke, some cancers, even Alzheimer's disease.

The definition of large dose varies, but the line has often been drawn at 400 International Units (IU) a day, which is more than 10 times the officially recommended daily intake.*

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