False
„Antioxidant supplements (vitamins C, E, beta-carotene) extend life.”
Cochrane's review of 78 RCTs (n=296,707) found beta-carotene and vitamin E supplements INCREASED mortality, vitamin C was neutral. Free radicals are partly signalling molecules: high doses even blunt exercise adaptation.
Last reviewed: 6 September 2026
This site is educational and does not replace medical advice. Start any supplement or drug only after consulting a doctor or pharmacist.