“Demystifying acupuncture”. It.nvolves inserting needles to stimulate points on the acupuncture clinic outer ear . 63 The modern approach was developed in France during the early 1950s. 63 There is no scientific evidence Association of Canada are used in provinces without government regulation. 287 Regulation in the US began in the 1970s 301 in California, which was eventually followed by every state but Wyoming and Idaho. 299 302 Licensing requirements vary greatly from state to state.