Lung cancer associated with beta-carotene supplementation in smokers


Prescrire International 19(107): 121

2010


ISSN/ISBN: 1167-7422
PMID: 20738040
Document Number: 646774
A meta-analysis of four randomised trials in a total of 109 394 subjects showed a statistically significant increase in the risk of lung cancer among smokers who used dietary supplements containing beta-carotene, at a mean dose of 20 to 30 mg/day. This contradicts the results of observational studies conducted in the 1990s.

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