Document Detail


The impact of garlic on lipid parameters: a systematic review and meta-analysis.
MedLine Citation:
PMID:  19555517     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In order to determine the impact of garlic on total cholesterol (TC), TAG levels, as well as LDL and HDL, and establish if any variables have an impact on the magnitude of this effect, a meta-analysis was conducted. A systematic literature search of MEDLINE, CINAHL and the Cochrane Database from the earliest possible date through to November 2007 was conducted to identify randomised, placebo-controlled trials of garlic that reported effects on TC, TAG concentrations, LDL or HDL. The weighted mean difference of the change from baseline (with 95 % CI) was calculated as the difference between the means in the garlic groups and the control groups using a random-effects model. Subgroup and sensitivity analyses were performed to determine the effects on type, brand and duration of garlic therapy as well as baseline TC and TAG levels, the use of dietary modification, and study quality on the meta-analysis's conclusions. Twenty-nine trials were included in the analysis. Upon meta-analysis garlic was found to significantly reduce TC ( - 0.19; 95 % CI - 0.33, - 0.06 mmol/l) and TAG ( - 0.11; 95 % CI - 0.19, - 0.06 mmol/l) but exhibited no significant effect on LDL or HDL. There was a moderate degree of statistical heterogeneity for the TC and TAG analyses. Garlic reduces TC to a modest extent, an effect driven mostly by the modest reductions in TAG, without appreciable LDL lowering or HDL elevation. Higher baseline line TC levels and the use of dietary modification may alter the effect of garlic on these parameters. Future studies should be conducted evaluating the impact of adjunctive garlic therapy with fibrates or statins on TAG concentrations.
Authors:
Kurt M Reinhart; Ripple Talati; C Michael White; Craig I Coleman
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Publication Detail:
Type:  Journal Article; Meta-Analysis; Review    
Journal Detail:
Title:  Nutrition research reviews     Volume:  22     ISSN:  1475-2700     ISO Abbreviation:  Nutr Res Rev     Publication Date:  2009 Jun 
Date Detail:
Created Date:  2009-06-26     Completed Date:  2009-08-27     Revised Date:  2009-09-01    
Medline Journal Info:
Nlm Unique ID:  9113797     Medline TA:  Nutr Res Rev     Country:  England    
Other Details:
Languages:  eng     Pagination:  39-48     Citation Subset:  IM    
Affiliation:
Department of Pharmacy Practice, University of Connecticut School of Pharmacy, Storrs, CT, USA.
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MeSH Terms
Descriptor/Qualifier:
Cholesterol / blood*
Garlic*
Humans
Plant Preparations / pharmacology*
Randomized Controlled Trials as Topic
Triglycerides / blood*
Chemical
Reg. No./Substance:
0/Plant Preparations; 0/Triglycerides; 57-88-5/Cholesterol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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