—Current and former smokers should avoid multivitamins with lots of beta-carotene or vitamin A; two studies have tied them to increased risk of lung cancer.
Vitamin facts: http://www.cancer.gov/cancertopics/factsheet/prevention/antioxidants
Dietary advice: www.dietaryguidelines.gov
Task force advice: http://www.uspreventiveservicestaskforce.org/uspstf/uspsvita.htm
Vitamin E and prostate study: http://jama.ama-assn.org/content/306/14/1549
Marilynn Marchione can be followed at http://twitter.com/MMarchioneAP
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