Chinese research:To compare therapeutic effects of deeply needling Qiangji 4 points and routine acupuncture therapy on prolapse of lumbar intervertebral disc.....At the end of the first therapeutic course, the cured rate was 42.1% in the deeply needling group and 28.1% in the routine acupuncture group with significant difference between the two groups (P<0.05), and at the end of the second course, the cured rate was 82.9% in the deeply needling group and 46.8% in the routine acupuncture group with a very significant difference....
Research from Zhongguo Zhen Jiu. 2008 May;28(5):341-4.
That's why Zak acupuncture work....
