Researchers: High doses of vitamin E linked to higher risk of lung cancer.

The study of 77000 people: long-term taking 400 mg/day increased lung cancer risk by 28%. Taking beta-carotete can lead same risk.

... Vitamin E is known to be an antioxidant - protecting cells from molecules called free radicals.

But the US researchers speculate that, in high doses, it may also act as a pro-oxidant - causing oxidation and therefore damage to cells. ...