Lipids

, Volume 36, Supplement 1, pp S53–S63 | Cite as

Antioxidant vitamins and prevention of cardiovascular disease: Epidemiological and clinical trial data

  • Roberto Marchioli
  • Carlo Schweiger
  • Giacomo Levantesi
  • Luigi Tavazzi
  • Franco Valagussa
Article

Abstract

Naturally occurring antioxidants such as vitamin E, β-carotene, and vitamin C can inhibit the oxidative modification of low density lipoproteins. This action could positively influence the atherosclerotic process and, as a consequence, the progression of coronary heart disease. A wealth of experimental studies provide a sound biological rationale for the mechanisms of action of antioxidants, whereas epidemiologic studies strongly sustain the “antioxidant hypothesis”. To date, however, clinical trials with β-carotene supplements have been disappointing, and their use as a preventive intervention for cancer and coronary heart disease should be discouraged. Only scanty data from clinical trials are available for vitamin C. As to vitamin E, discrepant results have been obtained by the Alpha-Tocopherol, Beta Carotene Cancer Prevention Study with a low-dose vitamin E supplementation (50 mg/d) and the Cambridge Heart Antioxidant Study (400–800 mg/d). The results of the GISSI-Prevenzione (300 mg/d) and HOPE (400 mg/d) trials suggest the absence of relevant clinical effects of vitamin E on the risk of cardiovascular events. Currently ongoing are several large-scale clinical trials that will help in clarifying the role of vitamin E in association with other antioxidants in the prevention of atherosclerotic coronary disease.

Abbreviations

ATBC trial

Alpha-Tocopherol, Beta Carotene trial

GARET

β-Carotene and Retinol Efficacy cancer prevention Trial

CHAOS

Cambridge Heart Antioxidant Study

CHD

coronary heart disease

CI

confidence interval

CVD

cardiovascular disease

GISSI

Gruppo Italiano per lo Studio della Sopravyivenza nell'Infarto Miocardio

HOPE

Heart Outcomes Prevention Evaluation

IHD

ischemic heart disease

LDL

low density lipoprotein

MI

myocardial infarction

OR

odds ratio

PHS

Physicians' Health Study

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Copyright information

© AOCS Press 2001

Authors and Affiliations

  • Roberto Marchioli
    • 5
  • Carlo Schweiger
    • 1
  • Giacomo Levantesi
    • 2
  • Luigi Tavazzi
    • 3
  • Franco Valagussa
    • 4
  1. 1.Ospedale di Passirana di RhoMilanoItaly
  2. 2.Ospedale di VastoChietiItaly
  3. 3.Policlinico San MatteoPaviaItaly
  4. 4.Ospedale di MonzaItaly
  5. 5.Laboratory of Clinical Epidemiology of Cardiovascular Disease, Istituto di Ricerche Farmacologiche Mario NegriConsorzio Mario Negri SudSanta Maria Imbaro (Chieti)Italy

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