Meta-regression analyses, meta-analyses, and trial sequential analyses of the effects of supplementation with Beta-carotene, vitamin a, and vitamin e singly or in different combinations on all-cause mortality
Evidence shows that antioxidant supplements may increase mortality. Our aims were to assess whether different doses of beta-carotene, vitamin A, and vitamin E affect mortality in primary and secondary prevention randomized clinical trials with low risk of bias.
P L O S One, 2013, Vol 8, Issue 9
Journal Article; Meta-Analysis; Research Support, Non-U.S. Gov't