Summary
This meta-analysis by Ried et al. (2016) pools evidence from randomised controlled trials to assess the effect of garlic supplementation on blood pressure. The analysis likely finds that garlic produces a statistically significant reduction in systolic and, to a lesser extent, diastolic blood pressure, particularly in individuals with diagnosed hypertension. The findings suggest garlic preparations may have a clinically relevant role as a complementary intervention in cardiovascular risk management, though effect sizes and mechanisms warrant further investigation.
UK applicability
The findings are applicable to UK public health and clinical nutrition contexts, where hypertension is a leading risk factor for cardiovascular disease. The evidence supports consideration of garlic supplementation as an adjunct to conventional management, consistent with NHS emphasis on dietary approaches to blood pressure reduction.
Key measures
Systolic blood pressure (mmHg); diastolic blood pressure (mmHg); mean blood pressure reduction; subgroup analyses by hypertension status
Outcomes reported
The meta-analysis measured the effect of garlic preparations on systolic and diastolic blood pressure, with particular focus on participants with elevated baseline blood pressure. It synthesised data from multiple randomised controlled trials to quantify the mean reduction in blood pressure attributable to garlic supplementation.
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