| Vitamin C supplementation lowers serum low-density lipoprotein cholesterol and triglycerides: a meta-analysis of 13 randomized controlled trials. | |
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MedLine Citation:
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PMID: 19674720 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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OBJECTIVE: Vitamin C has been shown to be an effective therapeutic for reducing total serum cholesterol, but epidemiologic studies have determined that low-density lipoprotein (LDL) cholesterol and high-density lipoprotein (HDL) cholesterol are actually better predictive measures of coronary heart disease risk. Therefore, the purpose of this study was to provide a comprehensive meta-analysis of randomized controlled trials to investigate the effect of vitamin C supplementation on LDL and HDL cholesterol as well as triglycerides in patients with hypercholesterolemia. METHODS: Thirteen randomized controlled trials published between 1970 and June 2007 were identified using Medline and a manual search. From the 13 trials, 14 separate group populations with hypercholesterolemia and who were supplemented with at least 500 mg/d of vitamin C for between 3 and 24 weeks were entered into the meta-analysis. This meta-analysis used a random-effects model; and the overall effect sizes were calculated for changes in LDL and HDL cholesterol, as well as triglyceride concentrations. RESULTS: The pooled estimate of effect for vitamin C supplementation on LDL and HDL cholesterol was -7.9 mg/dL (95% confidence interval [CI], -12.3 to -3.5; P = .000) and 1.1 mg/dL (95% CI, -0.2 to 2.3; not significant), respectively. The pooled estimate of effect for vitamin C supplementation on triglycerides was -20.1 mg/dL (95% CI, -33.3 to -6.8; P < .003). CONCLUSION: Supplementation with at least 500 mg/d of vitamin C, for a minimum of 4 weeks, can result in a significant decrease in serum LDL cholesterol and triglyceride concentrations. However, there was a nonsignificant elevation of serum HDL cholesterol. |
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Authors:
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Marc P McRae |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of chiropractic medicine Volume: 7 ISSN: 1556-3707 ISO Abbreviation: J Chiropr Med Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2009-08-13 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101163637 Medline TA: J Chiropr Med Country: United States |
Other Details:
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Languages: eng Pagination: 48-58 Citation Subset: - |
Affiliation:
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Assistant Professor, Department of Physiology and Biochemistry, National University of Health Sciences, Lombard, IL 60148. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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