Beta‐carotene in multivitamins and the possible risk of lung cancer among smokers versus former smokers

@article{Tanvetyanon2008BetacaroteneIM,
  title={Beta‐carotene in multivitamins and the possible risk of lung cancer among smokers versus former smokers},
  author={Tawee Tanvetyanon and Gerold Bepler},
  journal={Cancer},
  year={2008},
  volume={113}
}
Some studies have suggested that beta‐carotene supplementation may increase the risk of lung cancer, particularly among smokers or former smokers. Beta‐carotene, a provitamin A, is available in multivitamins. In the current study, the authors investigated the risk of lung cancer associated with beta‐carotene in smokers or former smokers and surveyed the beta‐carotene content in national brand multivitamins. 
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