A pilot trial followed women with PCOS through 16 weeks of acupuncture and 16 weeks after it. Their cycles shortened during treatment, and by the end of follow-up the two groups looked alike again.
RESEARCH
Clinical trial · International Journal of Women's Health · Oct 22, 2026
The International Journal of Women's Health published a pilot trial in which women with polycystic ovary syndrome (PCOS) and infrequent periods had more periods and shorter cycles during 16 weeks of acupuncture. Sixty women aged 20 to 40, in China and South Korea, were randomly assigned to acupuncture plus lifestyle advice or lifestyle advice alone. At week 16, the acupuncture group averaged 0.2 more periods a month than the advice-only group, about one extra period every five months, and their cycles were about 20 days shorter. Sixteen weeks after treatment ended, the groups no longer differed. Hormone levels, body mass index and quality of life did not differ at either point. Neither patients nor practitioners were blinded, and 13 women dropped out. The study's authors suggest future trials test ways to make the effect last, such as visit frequency, point selection or electroacupuncture.
Protocol: manual acupuncture at BL32, GV20, ST25, CV4, ST29, EX-CA1 (Zigong), LI4, SP9, SP6 and LR3, with a balanced reinforcing-reducing technique to deqi and 20-minute retention; BL32 was needled prone and the rest supine. Ten sessions every four weeks, two to three a week and paused during menses, for about 40 sessions over 16 weeks. Needle depth and angle are in the paper's supplementary table. Adverse events: three cases of minor bleeding under the skin in the acupuncture group, all resolved on their own.
PRACTICE
Report cycle changes the way the PCOS guideline defines them
This week's trial measured periods per month and cycle length, the same markers the 2023 International Evidence-based Guideline for PCOS uses to define irregular cycles. For patients more than three years past their first period, the guideline counts cycles shorter than 21 days or longer than 35 days, or fewer than eight cycles a year, as irregular. The guideline was developed with the American Society for Reproductive Medicine and the European Society of Human Reproduction and Embryology, so it's a shared reference for many gynecologists and reproductive endocrinologists. When a patient with PCOS tracks her cycle start dates, a progress note or a letter to her physician can report change in those terms, such as “cycles averaged 52 days at intake and 33 days over the last three.” It's an easy way to start a conversation with her gynecologist early in care.
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FROM THE EDITOR
Kim Neumann, LAc
Kim has worked on behalf of California’s acupuncture profession for 25 years. She ran her own practice in Oakland and San Francisco. Before acupuncture, she worked in marketing, publishing and business operations, and she has taught CEUs on acupuncture marketing.
