Garlic can play an essential role in the prevention of atherosclerosis, but the research addressing the effect of garlic on the concentration of lipoprotein(a) [Lp(a)] has not been fully demonstrated.
This meta-analysis of six available randomized controlled trials did not suggest a significant alteration in plasma Lp(a) levels after garlic consumption.
When the studies were categorized according to the duration of supplementation, a significant elevation of plasma Lp(a) concentrations was found in trials lasting >12 wk.