Sui Y et al, 2012, Obesity Rev, Vol 3, p 409–430
This systematic review (which is not specific to obesity only in PCOS patients) collected data from RCTs that examined the effect of acupuncture and/or Chinese herbal medicine on nearly 5000 overweight patients, compared with a control group of nearly 4000 overweight subjects. The review reports that in terms of weight loss, acupuncture and Chinese herbal medicine are better than placebo and lifestyle interventions and have similar efficacy to anti-obesity drugs (including Metformin), but with fewer side effects. This review also noted that those who used acupuncture or Chinese herbal medicine to lose weight had a lower risk of relapse. More large RCTs are recommended before recommendations for therapeutic interventions can be made.