Garlic for Blood Pressure Regulation

Research suggests that garlic may support blood pressure regulation through multiple biological pathways, including the release of hydrogen sulfide from garlic-derived polysulfides, which animal and mechanistic studies indicate may influence vascular tone and cardiovascular protection. A 2024 mini review synthesizing 12 clinical trials and 10 observational studies found that raw garlic consumption was associated with improvements in blood pressure alongside other cardiometabolic markers, though the included studies varied widely in design and the observational data was largely limited to Asian populations. Interestingly, a receptor-binding study found that common garlic showed little direct activity at adrenergic and dopaminergic receptors typically involved in blood pressure control, suggesting its effects likely arise through alternative mechanisms such as the hydrogen sulfide pathway. Overall, the available evidence is directionally supportive but draws from a mix of clinical trials, observational studies, and mechanistic research, each with notable limitations, and researchers across these studies consistently call for larger, more rigorous randomized controlled trials before firm conclusions can be drawn.