Abstract
Purpose
To evaluate the effect of oral vitamin E supplementation on all-cause mortality in apparently healthy people.
Methods
A systematic review and meta-analysis was conducted on randomised controlled trials (RCTs) with ≥6 months of follow up investigating the effect of vitamin E supplementation on healthy adults in developed countries. Electronic databases (MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials) and reference lists of trial reports were searched for RCTs published between 1966 and June 2012. Three investigators assessed eligibility of identified trials. Disagreements were resolved by consensus. Two investigators independently extracted data according to the criteria.
Results
There were 18 RCTs identified with 142,219 apparently healthy participants (71,116 in vitamin E intervention groups and 71,103 in control groups) that were included in the final analysis. Fixed effect and random effects analysis of the 18 trials revealed that supplementation with vitamin E was not associated with all-cause mortality (relative risk 1.01, 95 % confidence interval 0.97 – 1.05, p = 0.65). Subgroup analyses by type of vitamin E (natural or synthetic), dose or duration of exposure, study design or quality, and pre-specified mortality outcome showed no association with all-cause mortality.
Conclusions
The evidence from pooled analysis of 18 randomised controlled trials undertaken in apparently healthy people shows no effect of vitamin E supplementation at a dose of 23–800 IU/day on all-cause mortality.
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References
Dutta A, Dutta SK. Vitamin E and its role in the prevention of atherosclerosis and carcinogenesis: a review. J Am Coll Nutr. 2003;22(4):258–68.
Stampfer MJ, Hennekens CH, Manson JE, et al. Vitamin E consumption and the risk of coronary disease in women. N Engl J Med. 1993;328(20):1444–9.
Rimm EB, Stampfer MJ, Ascherio A, et al. Vitamin E consumption and the risk of coronary heart disease in men. N Engl J Med. 1993;328(20):1450–6.
Vivekananthan DP, Penn MS, Sapp SK, et al. Use of antioxidant vitamins for the prevention of cardiovascular disease: meta-analysis of randomised trials. Lancet. 2003;361(9374):2017–23.
Eidelman RS, Hollar D, Hebert PR, et al. Randomized trials of vitamin E in the treatment and prevention of cardiovascular disease. Arch Intern Med. 2004;164(14):1552–6.
Myung SK, Ju W, Cho B, et al. Efficacy of vitamin and antioxidant supplements in prevention of cardiovascular disease: systematic review and meta-analysis of randomised controlled trials. BMJ (Clinical research ed). 2013;346:f10.
Jiang L, Yang KH, Tian JH, et al. Efficacy of antioxidant vitamins and selenium supplement in prostate cancer prevention: a meta-analysis of randomized controlled trials. Nutr Cancer. 2010;62(6):719–27.
Bjelakovic G, Nikolova D, Simonetti RG, et al. Systematic review: primary and secondary prevention of gastrointestinal cancers with antioxidant supplements. Aliment Pharmacol Ther. 2008;28(6):689–703.
Cortes-Jofre M, Rueda JR, Corsini-Munoz G, et al. Drugs for preventing lung cancer in healthy people. The Cochrane database of systematic reviews. 2012;10:CD002141.
Farina N, Isaac MG, Clark AR, et al. Vitamin E for Alzheimer’s dementia and mild cognitive impairment. The Cochrane database of systematic reviews. 2012;11:CD002854.
Schurks M, Glynn RJ, Rist PM, et al. Effects of vitamin E on stroke subtypes: meta-analysis of randomised controlled trials. BMJ (Clinical research ed). 2010;341:c5702.
Miller 3rd ER, Pastor-Barriuso R, Dalal D, et al. Meta-analysis: high-dosage vitamin E supplementation may increase all-cause mortality. Ann Intern Med. 2005;142(1):37–46.
Bjelakovic G, Nikolova D, Gluud LL, et al. Mortality in randomized trials of antioxidant supplements for primary and secondary prevention: systematic review and meta-analysis. JAMA :J Am Med Assoc. 2007;297(8):842–57.
Bjelakovic G, Nikolova D, Gluud LL, et al. Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases. The Cochrane database of systematic reviews. 2012;3:CD007176.
Bjelakovic G, Nikolova D, Gluud C. 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: do we have evidence for lack of harm? PLoS One. 2013;8(9):e74558.
Chun OK, Floegel A, Chung SJ, et al. Estimation of antioxidant intakes from diet and supplements in U.S. adults. J nutri. 2010;140(2):317–24.
Yang M, Chung SJ, Chung CE, et al. Estimation of total antioxidant capacity from diet and supplements in US adults. British J nutri. 2011;106(2):254–63.
Tilburt JC, Emanuel EJ, Miller FG. Does the evidence make a difference in consumer behavior? Sales of supplements before and after publication of negative research results. J Gen Intern Med. 2008;23(9):1495–8.
Bailey RL, Gahche JJ, Miller PE, et al. Why US adults use dietary supplements. JAMA internal medicine. 2013;173(5):355–61.
MacLennan AH, Wilson DH, Taylor AW. Prevalence and cost of alternative medicine in Australia. Lancet. 1996;347(9001):569–73.
MacLennan AH, Wilson DH, Taylor AW. The escalating cost and prevalence of alternative medicine. Prev Med. 2002;35(2):166–73.
MacLennan AH, Myers SP, Taylor AW. The continuing use of complementary and alternative medicine in South Australia: costs and beliefs in 2004. Med J Aust. 2006;184(1):27–31.
Xue CC, Zhang AL, Lin V, et al. Complementary and alternative medicine use in Australia: a national population-based survey. J altern comp med(New York, NY). 2007;13(6):643–50.
Williamson M, Tudball J, Toms M, et al. Information Use and Needs of Complementary Medicines Users. In: National Prescribing Service S, ed., 2008.
Morgan TK, Williamson M, Pirotta M, et al. A national census of medicines use: a 24-hour snapshot of Australians aged 50 years and older. Med J Aust. 2012;196(1):50–3.
Brownie S. Predictors of dietary and health supplement use in older Australians. The Australian journal of advanced nursing : a quarterly publication of the Royal Australian Nursing Federation. 2006;23(3):26–32.
27. Australian Bureau of Statistics. Australian Health Survey: Health service usage and health related actions, 2011–12, cat. no. 4364.0.55.002. Canberra: ABS; 2013.
Druesne-Pecollo N, Latino-Martel P, Norat T, et al. Beta-carotene supplementation and cancer risk: a systematic review and metaanalysis of randomized controlled trials. Int j canc J intern du canc. 2010;127(1):172–84.
Gee PT. Unleashing the untold and misunderstood observations on vitamin E. Genes nutri. 2011;6(1):5–16.
Moher D, Liberati A, Tetzlaff J, et al. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. BMJ (Clinical research ed). 2009;339:b2535.
Human Development Report – The Rise of the South: Human Progress in a Diverse World. 2013
The Cochrane Collaboration, editor. Cochrane Handbook for Systematic Reviews of Interventions. Version 5.1.0 ed: Cochrane Collaboration 2011
Borenstein M, Hedges L, Higgins J, et al. Comprehensive Meta-analysis Version 2. Englewood NJ: Biostat; 2005.
Collins EG, Edwin Langbein W, Orebaugh C, et al. PoleStriding exercise and vitamin E for management of peripheral vascular disease. Med Sci Sports Exerc. 2003;35(3):384–93.
Manning PJ, Sutherland WH, Williams SM, et al. The effect of lipoic acid and vitamin E therapies in individuals with the metabolic syndrome. Nutr Metab Cardiovasc Dis. 2013;23(6):543–9.
Hoffman RM, Garewal HS. Alpha-tocopherol supplementation for men with existing coronary artery disease: a feasibility study. Prev Med. 1999;29(2):112–8.
Wluka AE, Stuckey S, Brand C, et al. Supplementary vitamin E does not affect the loss of cartilage volume in knee osteoarthritis: a 2 year double blind randomized placebo controlled study. J rheumatol. 2002;29(12):2585–91.
Sanyal AJ, Chalasani N, Kowdley KV, et al. Pioglitazone, vitamin E, or placebo for nonalcoholic steatohepatitis. N Engl J Med. 2010;362(18):1675–85.
de Waart FG, Kok FJ, Smilde TJ, et al. Effect of glutathione S-transferase M1 genotype on progression of atherosclerosis in lifelong male smokers. Atherosclerosis. 2001;158(1):227–31.
Hodis HN, Mack WJ, LaBree L, et al. Alpha-tocopherol supplementation in healthy individuals reduces low-density lipoprotein oxidation but not atherosclerosis: the Vitamin E Atherosclerosis Prevention Study (VEAPS). Circulation. 2002;106(12):1453–9.
Magliano D, McNeil J, Branley P, et al. The Melbourne Atherosclerosis Vitamin E Trial (MAVET): a study of high dose vitamin E in smokers. European journal of cardiovascular prevention and rehabilitation : official journal of the European Society of Cardiology, Working Groups on Epidemiology & Prevention and Cardiac Rehabilitation and Exercise Physiology. 2006;13(3):341–7.
Salonen JT, Nyyssonen K, Salonen R, et al. Antioxidant Supplementation in Atherosclerosis Prevention (ASAP) study: a randomized trial of the effect of vitamins E and C on 3-year progression of carotid atherosclerosis. J Intern Med. 2000;248(5):377–86.
Graat JM, Schouten EG, Kok FJ. Effect of daily vitamin E and multivitamin-mineral supplementation on acute respiratory tract infections in elderly persons: a randomized controlled trial. JAMA : J Am Med Assoc. 2002;288(6):715–21.
McNeil JJ, Robman L, Tikellis G, et al. Vitamin E supplementation and cataract: randomized controlled trial. Ophthalmology. 2004;111(1):75–84.
Milman U, Blum S, Shapira C, et al. Vitamin E supplementation reduces cardiovascular events in a subgroup of middle-aged individuals with both type 2 diabetes mellitus and the haptoglobin 2–2 genotype: a prospective double-blinded clinical trial. Arterioscler Thromb Vasc Biol. 2008;28(2):341–7.
Cook NR, Albert CM, Gaziano JM, et al. A randomized factorial trial of vitamins C and E and beta carotene in the secondary prevention of cardiovascular events in women: results from the Women’s Antioxidant Cardiovascular Study. Arch Intern Med. 2007;167(15):1610–8.
Lonn E, Bosch J, Yusuf S, et al. Effects of long-term vitamin E supplementation on cardiovascular events and cancer: a randomized controlled trial. JAMA : J Am Med Assoc. 2005;293(11):1338–47.
Gaziano JM, Glynn RJ, Christen WG, et al. Vitamins E and C in the prevention of prostate and total cancer in men: the Physicians’ Health Study II randomized controlled trial. JAMA : J Am Med Assoc. 2009;301(1):52–62.
Virtamo J, Pietinen P, Huttunen JK, et al. Incidence of cancer and mortality following alpha-tocopherol and beta-carotene supplementation: a postintervention follow-up. JAMA : J Am Med Assoc. 2003;290(4):476–85.
Lippman SM, Klein EA, Goodman PJ, et al. Effect of selenium and vitamin E on risk of prostate cancer and other cancers: the Selenium and Vitamin E Cancer Prevention Trial (SELECT). JAMA : J Am Med Assoc. 2009;301(1):39–51.
Lee IM, Cook NR, Gaziano JM, et al. Vitamin E in the primary prevention of cardiovascular disease and cancer: the Women’s Health Study: a randomized controlled trial. JAMA : J Am Med Assoc. 2005;294(1):56–65.
Fortmann SP, Burda BU, Senger CA, et al. Vitamin and Mineral Supplements in the Primary Prevention of Cardiovascular Disease and Cancer: An Updated Systematic Evidence Review for the U.S. Preventive Services Task Force. Annals of internal medicine 2013
Abner EL, Schmitt FA, Mendiondo MS, et al. Vitamin E and all-cause mortality: a meta-analysis. Current aging sci. 2011;4(2):158–70.
Shekelle PG, Morton SC, Jungvig LK, et al. Effect of supplemental vitamin E for the prevention and treatment of cardiovascular disease. J Gen Intern Med. 2004;19(4):380–9.
Albanes D. Antioxidant supplements and mortality. JAMA : J Am Med Assoc. 2007;298(4):400. author reply 02–3.
Willcox BJ, Curb JD, Rodriguez BL. Antioxidants in cardiovascular health and disease: key lessons from epidemiologic studies. Am J Cardiol. 2008;101(10A):75D–86D.
Cordero Z, Drogan D, Weikert C, et al. Vitamin E and risk of cardiovascular diseases: a review of epidemiologic and clinical trial studies. Crit Rev Food Sci Nutr. 2010;50(5):420–40.
Steinberg D. The LDL modification hypothesis of atherogenesis: an update. J Lipid Res. 2009;50:S376–81.
Li H, Horke S, Forstermann U. Vascular oxidative stress, nitric oxide and atherosclerosis. Atherosclerosis. 2014;237(1):208–19.
Acknowledgments
We thank Lorena Romero, Senior Librarian, Ian Potter Library at Alfred Health for her assistance with the search strategy, also Dr Lisa Demos and Dr Kathlyn Ronaldson (School of Public Health and Preventive Medicine, Monash University) for their constructive comments on the manuscript. We would like to acknowledge the contribution made by the late Associate Professor Damien Jolley to the discussion and planning for this study.
Conflict of Interest
AC, MB and LP declare that they have no conflict of interest. JM has received honoraria for service on advisory boards for Pfizer, Bayer and Janssen-Cilag.
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Curtis, A.J., Bullen, M., Piccenna, L. et al. Vitamin E Supplementation and Mortality in Healthy People: A Meta-Analysis of Randomised Controlled Trials. Cardiovasc Drugs Ther 28, 563–573 (2014). https://doi.org/10.1007/s10557-014-6560-7
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DOI: https://doi.org/10.1007/s10557-014-6560-7