Vitamin's effect on cancer varies by smoker status
20th Sep 2005, 23:02 GMT
NEW YORK (Reuters Health) - High intake of beta-carotene seems to decrease the risk of tobacco-related cancers among people who've never smoked, but to increase the risk among current or past smokers, new research suggests. Although the findings are based on a study of women, the researchers believe that similar results would be obtained in men.
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