Serum carotenoids are associated with increased lung cancer risk among alcohol drinkers, but not among non-drinkers in a cohort of tin miners.
Ratnasinghe D, Forman MR, Tangrea JA, Qiao Y, Yao SX, Gunter EW, Barrett MJ, Giffen CA, Erozan Y, Tockman MS, et al. Alcohol Alcohol. 2000 Jul-Aug; 35(4):355-60.