A recent study in the journal of Medical Acupuncture has found that acupuncture lowered blood pressure in hypertensive patients. Benefits could persist for over a month and the majority of participants were observed to have measurably benefitted from the treatment. The reduction in blood pressure was somewhat small but not insignificant, and other biological markers were changed in positive ways such as norepinephrine and renin.
From the discussion of this study:
Because EA decreases both peak and average SBP, this therapy may decrease the risk for stroke, peripheral artery disease, heart failure, and myocardial infarction in hypertensive patients. Even small increases in SBP and DBP increase the risk for aneurysm. Thus, although decreases in SBP and DBP were relatively small, in the 4–13 mmHg range, these small reductions by EA potentially are clinically meaningful. It is clear, however, that further studies aimed at acupuncture’s potential to reduce cardiovascular risk are warranted.