Some Harms Of Beta-carotene Supplementation May Persist After Discontinuing Use

A 6-year follow-up of a large, randomized trial in people with a history of smoking has found that the overall harm associated with beta-carotene supplementation on cardiovascular disease mortality disappeared quickly after participants stopped taking the supplements. However, the risk of lung cancer may persist, especially in females and former smokers, according to the study in the December 1 issue of the Journal of the National Cancer Institute.