Cited by 104Folate and B Vitamins ResearchNutritional Studies and DietLipoproteins and Cardiovascular Health

Homocysteine and vascular disease: review of published results of the homocysteine‐lowering trials

Clarke, Robert, Halsey, Jim, Bennett, Derrick, Lewington, Sarah·2011·Journal of Inherited Metabolic Disease

Abstract

Moderately elevated homocysteine levels have been associated with a higher risk of cardiovascular disease in observational studies, but whether these associations are causal is uncertain. Randomized trials of dietary supplementation with B vitamins were set up to assess whether lowering homocysteine levels could reduce the risk of vascular disease. This review is based on a meta‐analysis of published results of eight homocysteine‐lowering trials for preventing vascular disease. The eight trials comprised a total of 37,485 individuals and provided comparisons of the effects of B vitamins on 5,074 coronary heart disease (CHD) events, 1,483 stroke events, 2,692 incident cancer events, and 5,128 deaths. Our meta‐analysis assessed the effects of lowering homocysteine levels by about 25% for about 5 years. Allocation to B vitamins had no beneficial effects on any cardiovascular events, with hazard ratios (95% confidence intervals) of 1.01 (0.96–1.07) for CHD and 0.96 (0.87–1.07) for stroke. Moreover, allocation to B vitamins had no significant adverse effects on cancer [1.08 (0.99–1.17)], or for death from any cause [1.02 (0.97–1.07)]. Thus, supplementation with B vitamins had no statistically significant effects on the risks of cardiovascular events, total mortality rates, or cancer. A meta‐analysis based on individual participant data from all available trials will assess the effects of lowering homocysteine levels on a broader range of outcomes, overall and in all relevant subgroups. However, available evidence does not support the routine use of B vitamins to prevent cardiovascular disease.

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Crossref · 10.1007/s10545-010-9235-y

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  • In a study involving elderly individuals who were aged ≥ 85 years and had no history of cardiovascular disease, a high homocysteine concentration in the blood increased the relative risk for MI.

    “In a study involving elderly individuals who were aged ≥ 85 years and had no history of cardiovascular disease, a high homocysteine concentration in the blood increased the relative risk for MI290).”

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Authors
Clarke, R., Halsey, J., Bennett, D., & Lewington, S.
Affiliations
University of Oxford (GB)
Corresponding author
Clarke, Robert
Venue
Journal of Inherited Metabolic Disease
Publisher
Wiley
Published
2010-11-11
Volume
34
Issue
1
Pages
83-91
ISSN
  • 0141-8955 (ISSN-L)
  • 1573-2665
OpenAlex
W2005016697
Cited by
104
References
41
Citations by year
2026: 2 · 2025: 4 · 2024: 1 · 2023: 3 · 2022: 5 · 2021: 6 · 2020: 3 · 2019: 4 · 2018: 3 · 2017: 6 · 2016: 8 · 2015: 12 · 2014: 10 · 2013: 17 · 2012: 15
FWCI
1.58
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Inherited Metabolic Disease (publishedVersion)
  • PubMed (publishedVersion)
Funders
British Heart Foundation
Topics
  • Health Sciences › Medicine › Rheumatology › Folate and B Vitamins Research
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Nutritional Studies and Diet
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
Keywords
homocysteine, B vitamins, folic acid, vitamin B12, vitamin B6, coronary artery disease, stroke, cancer risk, cardiovascular disease prevention, mortality
MeSH terms
Cause of Death, Clinical Trials as Topic, Folic Acid, Homocysteine, Humans, Neoplasms, Vascular Diseases, Vitamin B Complex, Down-Regulation, Dietary Supplements

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