Moringa oleifera and Blood Pressure: Evidence and Potential Mechanisms

This systematic review examined the evidence for Moringa oleifera's effects on blood pressure, analyzing studies involving 847 participants total. Research suggests that moringa's potential blood pressure-lowering properties have been investigated since the 1990s, with animal studies consistently showing dose-dependent reductions in blood pressure. However, human clinical data presents a mixed picture. Some trials indicate mild blood pressure reductions, while others show no significant effects. The review found that most human studies were conducted on healthy individuals or diabetic patients rather than people with diagnosed hypertension, which limits the applicability of findings to those who might benefit most from blood pressure reduction. Animal studies suggest the hypotensive effects may be related to moringa's rich content of bioactive compounds including flavonoids, phenolic acids, and glucosinolates. The inconsistent human results may be due to differences in study populations, dosing protocols, preparation methods, and duration of treatment. The authors note significant limitations in standardization across studies, making it difficult to draw definitive conclusions about optimal dosing or preparation methods.