Here is an article from Healthcare Medicine Institute that provides good reference from journals.
Researchers find acupuncture effective for the treatment of obesity.
Acupuncture demonstrates clinical efficacy for the treatment of obesity in two controlled investigations. Based on the data, additional research is warranted. Larger sample sizes will help to confirm these preliminary findings.
Common to both studies reviewed in this article are acupoints SP6 (Sanyinjiao) and ST36 (Zusanli). According to Traditional Chinese Medicine (TCM) principles, both acupoints are indicated for the treatment of digestion related disorders and stimulate the body’s transforming and transporting functions of the digestive system. In this respect, these acupoints are choices consistent with the goals of the research.