Pain-Gate theory

Western science believes that pain impulses are blocked from reaching the spinal cord or brain at various “gates” within the nervous system. Research has shown that both peripheral and central nerves are affected by acupuncture at specific acupuncture points, therefore providing those who are suffering from pain relief.   

Stimulations of endorphins

Research shows that acupuncture stimulates the brain’s production of polypeptides that reduces pain sensitivity. Scientists have discovered that one of the mechanisms of how acupuncture works is that it increases the release of natural pain-relieving molecules known as endorphins by the brain. These are very similar to opiates (such as morphine), which are potent anesthetic agents.

Effects on neurotransmitters

Through clinical studies, it has been shown that acupuncture has a connection to the central nervous system which induces production or secretion of chemicals in the body such as neurotransmitters, hormones, and lymphokines. Thus, acupuncture affect the body's autonomic mechanisms that control and regulate the physiological reaction to pain.