Acupuncture treatments using low levels of electrical stimulation can lower elevations in blood pressure by as much as 50 percent, researchers at the Susan Samueli Center for Integrative Medicine at UC Irvine have found.
They have found that when an acupuncture needle is inserted at specific sites on the wrist, inside of the forearm or leg, this triggers the release of opioid chemicals in the brain that reduce excitatory responses in the cardiovascular system. This decreases the heart activity and its need for oxygen, which in turn can lower blood pressure, and promotes healing for a number of cardiac ailments, such as myocardial ischemia (insufficient blood flow to the heart) and hypertension.
In this study, the Longhurst team applied acupuncture to specific points on the forelimb of test rats with artificially elevated blood pressure rates; these same sites on humans are on the inside of the forearm slightly above the wrist. The researchers found that acupuncture alone had no effect on blood pressure.
In tests on rats, the researchers found that electroacupuncture treatments provided temporary relief from the conditions that raise blood pressure during hypertensive states. Such treatments, they believe, potentially can become part of a therapeutic regimen for long-term care of hypertension and other cardiovascular ailments in people.
