Oleson, T., and Flocco, W., "Randomized Controlled Study of Premenstrual Symptoms Treated with Foot, Hand, and Ear Reflexology." Obstetrics and Gynecology, Vol. 82, pages 906-911
35 women with 38 premenstrual symptoms were divided into two groups. One was given foot, hand, and ear reflexology; the other a placebo reflexology session. Each kept a diary for 2 months before, during and after the study. Results: 46% improvement in the first group and 19% in the placebo group.
Ear, hand, and foot reflexology used together was found to be effective for the relief of premenstrual symptoms (PMS)