Clinical acupuncture analgesia has now progressed from control of chronic pain to use as an operative anesthetic, and its pain-killing effect has been scientifically explained by the discovery that acupuncture stimulates the body to produce cerebral morphine.
像針灸止痛，在臨床上，已從慢性病痛的抑止，進一步做為外科手術麻醉之用。而它的止痛原理，也經科學驗證，發現針灸能刺激人體產生腦嗎啡之故。