Impact of electro-acupuncture and physical exercise on hyperandrogenism and oligo/amenorrhea in women with polycystic ovary syndrome: a randomized controlled trial. Am J Physiol Endocrinol Metab 300: E37-E45, 2011. First published October 13, 2010; doi:10.1152/ajpendo.00495.2010.-Polycystic ovary syndrome (PCOS), the most common endocrine disorder in women of reproductive age, is characterized by hyperandrogenism, oligo/amenorrhea, and polycystic ovaries. We aimed to determine whether low-frequency electroacupuncture (EA) would decrease hyperandrogenism and improve oligo/amenorrhea more effectively than physical exercise or no intervention. We randomized 84 women with PCOS, aged 18 -37 yr, to 16 wk of low-frequency EA, physical exercise, or no intervention. The primary outcome measure changes in the concentration of total testosterone (T) at week 16 determined by gas and liquid chromatography-mass spectrometry was analyzed by intention to treat. Secondary outcome measures were changes in menstrual frequency; concentrations of androgens, estrogens, androgen precursors, and glucuronidated androgen metabolites; and acne and hirsutism. Outcomes were assessed at baseline, after 16 wk of intervention, and after a 16-wk follow-up. After 16 wk of intervention, circulating T decreased by Ϫ25%, androsterone glucuronide by Ϫ30%, and androstane-3␣,17-diol-3-glucuronide by Ϫ28% in the EA group (P ϭ 0.038, 0.030, and 0.047, respectively vs. exercise); menstrual frequency increased to 0.69/month from 0.28 at baseline in the EA group (P ϭ 0.018 vs. exercise). After the 16-wk follow-up, the acne score decreased by Ϫ32% in the EA group (P ϭ 0.006 vs. exercise). Both EA and exercise improved menstrual frequency and decreased the levels of several sex steroids at week 16 and at the 16-wk follow-up compared with no intervention. Low-frequency EA and physical exercise improved hyperandrogenism and menstrual frequency more effectively than no intervention in women with PCOS. Low-frequency EA was superior to physical exercise and may be useful for treating hyperandrogenism and oligo/amenorrhea. acupuncture; androgens; estrogens; exercise; glucuronidated androgen metabolites; oligomenorrhea; sex steroid precursors POLYCYSTIC OVARY SYNDROME (PCOS), the most common endocrine disorder in women of reproductive age, is characterized by clinical or biochemical hyperandrogenism, oligo/amenorrhea, and polycystic ovaries with or without increased ovarian volume (4). The most constant and prominent feature is hyperandrogenism, manifested by hirsutism, persistent acne, and biochemical abnormalities (4), including elevated levels of androgens, sex steroid precursors, and glucuronidated androgen metabolites as well as estrogens (22).There is no gold standard for the long-term treatment of women with PCOS who do not attempt to conceive (1). Treatments for hyperandrogenism and menstrual disturbances include oral contraceptives, insulin sensitizers, and lifestyle interventions. Combined low-dose oral contraceptives are recommended as the primary treat...