A Research-Backed Overview
What current clinical trials and mechanistic research tell us about acupuncture's role in supporting reproductive, endocrine, and menopausal health.
The Problem
Hormonal and endocrine disorders span reproductive dysfunction, menopausal transition, thyroid disease, and infertility — conditions that affect millions of individuals and are frequently undertreated or managed with therapies carrying significant side effect profiles.
Polycystic ovary syndrome affects 10–13% of women of reproductive age worldwide, increasing in prevalence with age. It is characterized by hyperandrogenism, irregular ovulation, and polycystic ovarian morphology — and is recognized as the leading cause of anovulatory infertility, accounting for approximately 80% of infertility cases related to ovulation disorders. Beyond reproduction, PCOS elevates the lifetime risk of metabolic syndrome, type 2 diabetes, cardiovascular disease, and endometrial cancer.
The menopausal transition brings vasomotor symptoms (VMS) — hot flashes and night sweats — that can persist for a median of 7.4 years and severely disrupt daily life, sleep, and emotional wellbeing. Approximately one-third of menopausal women experience depressive symptoms, and sleep disorders affect 40–60% of perimenopausal women. While estrogen therapy remains the most effective treatment for VMS, it is contraindicated for many women due to risks including thromboembolic events and breast cancer.
Hashimoto's thyroiditis (HT) is an autoimmune condition affecting the thyroid, and even when thyroid function is stabilized through medication, many patients continue to experience a range of discomfort symptoms, reduced quality of life, and neck compression. Subclinical hypothyroidism presents similar challenges — patients may have abnormal TSH levels without overt symptoms, yet experience meaningful functional impairment. Standard pharmacological management does not address the full clinical picture for many patients.
Infertility affects approximately 8–12% of couples during reproductive age worldwide, with the age-standardized prevalence of male infertility increasing by nearly 0.3% per year over the past two decades. For women with PCOS, achieving pregnancy can be particularly challenging — anovulation, poor endometrial receptivity, and hormonal imbalance all impair conception. Conventional therapies carry meaningful costs, side effects, and in some cases, limited efficacy for non-responders.
Mechanisms of Action
Research has identified multiple physiological pathways through which acupuncture exerts effects on endocrine and reproductive systems — from neuroendocrine axis modulation to direct hormonal and immune regulation.
Acupuncture modulates the hypothalamic–pituitary–ovarian (HPO) axis — the central regulatory system governing reproductive hormone secretion. It suppresses excessive gonadotropin-releasing hormone (GnRH) secretion, reduces the LH/FSH ratio, and promotes β-endorphin release, collectively restoring hormonal balance and follicular function that are disrupted in conditions such as PCOS.
Ding et al., 2025; Feng et al., 2022Clinical trials demonstrate that acupuncture significantly reduces testosterone (T) levels and improves the LH/FSH ratio in PCOS patients. Mechanistically, electroacupuncture has been shown to downregulate kisspeptin, Kiss1r, and GnRH expression at both mRNA and protein levels in the hypothalamic arcuate nucleus — directly rebalancing neuroendocrine signaling that drives androgen excess.
Ding et al., 2025; Liu et al., 2025Acupuncture improves endometrial receptivity through multiple pathways: reducing uterine artery resistance indices (PI and RI), promoting uterine blood perfusion, upregulating implantation-related molecules including integrins and leukemia inhibitory factor (LIF), and potentially modulating endometrial immune cell populations — all of which support the uterine environment required for successful embryo implantation.
Ding et al., 2025; Chen et al., 2023One proposed mechanism for acupuncture's effect on hot flashes involves restoration of β-endorphin levels in the hypothalamus — reduced by declining estrogen — which normalizes the thermoregulatory center. Changes in β-endorphins and other neurotransmitters affect the hypothalamic setpoint, and acupuncture may alter these central neuromodulators to reduce VMS frequency and severity.
Avis et al., 2016; Fathi Najaf et al., 2024In PCOS patients with insulin resistance, electroacupuncture may improve glucose metabolism by upregulating GLUT4 expression in skeletal muscle and activating the PI3K/AKT signaling pathway. By improving insulin sensitivity, acupuncture reduces the compensatory hyperinsulinemia that drives excess androgen production in ovarian cells — addressing a core metabolic driver of PCOS.
Liu et al., 2025; Chen et al., 2023Acupuncture modulates neurotransmitter metabolism including serotonin (5-HT) — relevant to mood, sleep, and thermoregulation — and activates the PKA/CREB signaling pathway, enhancing synaptic plasticity and inhibiting neuroinflammation. In menopausal depression, acupuncture's benefits appear to be mediated through neurotransmitter regulation and neuroendocrine network modulation rather than direct sex hormone changes.
He et al., 2025; Avis et al., 2016Clinical Evidence
Randomized clinical trials, systematic reviews, and meta-analyses have evaluated acupuncture across a range of hormonal and endocrine conditions. Below is a summary of the strongest available evidence, drawn directly from the referenced studies.
A 2025 randomized, single-blind, sham-controlled clinical trial including 134 patients with PCOS-related infertility found that acupuncture combined with letrozole produced substantially higher ovulation and pregnancy rates than letrozole plus placebo acupuncture over three menstrual cycles. All pregnancies reported in the study were naturally conceived.
Beyond ovulation, the trial demonstrated significant improvements in testosterone levels, the LH/FSH ratio, endometrial receptivity (Salle score), and uterine artery blood flow indices — addressing multiple reproductive barriers simultaneously. The median time to pregnancy was 3.0 cycles in the acupuncture group, versus more than 70% of the control group remaining non-pregnant after three cycles.
The AIM (Acupuncture in Menopause) Study — a pragmatic randomized controlled trial of 209 perimenopausal and postmenopausal women aged 45–60 experiencing at least 4 VMS per day — found that a course of up to 20 acupuncture treatments produced a 36.7% decline in VMS frequency at 6 months, compared to a 6.0% increase in the control group. Statistically significant clinical improvement was observed after just 3 acupuncture treatments, with maximum effects occurring after a median of 8 treatments.
Crucially, the reduction in hot flash frequency was largely maintained at 12 months — 6 months after the end of treatment — suggesting durable clinical benefit. The ACOM study, a pragmatic primary care trial, confirmed rapid onset: significant reductions in hot flashes, sweating, and emotional symptoms were observed within 3 weeks of starting treatment, and sleep quality improved significantly.
A 2025 systematic review and meta-analysis following PRISMA guidelines evaluated acupuncture for menopausal depressive disorder (MDD). Findings indicated that acupuncture significantly outperformed control interventions in improving clinical effectiveness rates (OR=2.70, 95% CI: 1.63–4.48, p=0.0001) and in reducing depressive symptoms on validated scales. Acupuncture also significantly improved quality of life as measured by the Menopause Quality of Life Questionnaire (MENQOL).
Notably, approximately one-third of menopausal women experience depressive symptoms, with prevalence rising across the menopausal transition. While antidepressants and hormone replacement therapy are first-line treatments, long-term use carries risks of breast and endometrial cancer and cardiovascular disease — increasing interest in acupuncture as a non-pharmacological alternative with a favorable safety profile.
An exploratory randomized controlled trial of 58 subjects with Hashimoto's thyroiditis (HT) found that acupuncture over 8 weeks produced a significant reduction in thyroglobulin antibody (TGab) levels that persisted for 8 weeks after treatment ended. Acupuncture also significantly improved quality of life as measured by the disease-specific ThyPRO-39 and SF-36 scores. Critically, over 93% of acupuncture group subjects completed the full treatment protocol, and no serious adverse events were reported — indicating high safety and patient acceptance.
A separate case series on hypothyroidism patients receiving acupuncture combined with fire cupping for three months reported normalization of TSH levels, reduction in BMI, and reduction in thyroxine medication doses. Patients also reported marked improvements in fatigue, hair loss, and cold sensitivity — and these effects persisted through the three-month follow-up period.
A literature review summarizing the evidence for acupuncture in male infertility found that across 12 randomized controlled trials with 1,088 participants, acupuncture — alone or combined with another intervention — was effective in improving semen quality. Specific findings include: a prospective placebo-controlled RCT showing significantly higher sperm motility in the acupuncture arm for men with severe oligoasthenozoospermia; laser acupuncture producing significant increases in sperm motility and concentration; and transcutaneous electrical acupuncture point stimulation (TEAS) improving sperm count and motility in men with abnormal semen parameters.
In the context of varicocele-associated infertility, one study found that acupuncture produced a higher increase in sperm concentration than varicocelectomy surgery, with equivalent pregnancy rates (33% in both arms). Acupuncture has also shown benefit for men with prostatitis-related fertility issues, significantly improving urination, pain, and sexual function.
A systematic review and meta-analysis of 19 studies involving 2,400 women with postpartum hypogalactia (PH) found that acupuncture significantly increased serum prolactin (PRL) levels, milk secretion volume, total effective rate, and exclusive breastfeeding rate compared to controls. Prolactin is the primary hormonal regulator of milk secretion, making acupuncture's ability to elevate PRL levels a biologically plausible pathway for its clinical effects on breast milk production.
The Academy of Breastfeeding Medicine does not recommend medications for PH, and many women are reluctant to take pharmacological agents due to concerns about infant safety — making acupuncture a particularly relevant non-pharmacological option. The review identified acupoints CV17, SI1, ST18, and ST36 as most commonly used and clinically recommended for PH treatment.
Neuroendocrine Evidence
A growing body of mechanistic research has identified specific neuroendocrine pathways through which acupuncture influences hormonal conditions. In PCOS, electroacupuncture has been shown to reverse abnormalities in the hypothalamic arcuate nucleus — downregulating kisspeptin, Kiss1r, and GnRH at both mRNA and protein levels, thereby restoring the GnRH/LH neuroendocrine circuit that governs ovulation and androgen balance.
In menopausal conditions, acupuncture acts on the hypothalamic thermoregulatory center through the endorphin system — restoring β-endorphin levels that decline with estrogen withdrawal. For depression and mood, acupuncture activates the PKA/CREB signaling pathway, regulates serotonin (5-HT) metabolism, enhances hippocampal synaptic plasticity, and modulates HPA axis activity — providing benefits that appear to be independent of direct sex hormone changes.
This breadth of neuroendocrine reach — spanning the HPO axis, HPA axis, autonomic nervous system, and neurotransmitter regulation — helps explain why acupuncture may benefit such a diverse range of hormonally-mediated conditions.
Safety Profile
Across the clinical trials reviewed, acupuncture consistently demonstrated a favorable safety profile in hormonal and endocrine applications — particularly when compared to pharmacological alternatives such as hormone replacement therapy, SSRIs, and SNRIs, which carry meaningful risk profiles.
The most common adverse effect reported across trials was bruising at the needling site — described as mild and manageable. In the AIM Study of 209 menopausal women, only 3 participants (1.4%) reported any adverse effect. In the Hashimoto's thyroiditis RCT, 93%+ of participants completed the full treatment course with no serious adverse events, and authors noted proficient practitioners can significantly reduce even bruising.
Avis et al., 2016; Wang et al., 2024; Ding et al., 2025Hormone replacement therapy carries risks of thromboembolic events, breast cancer, and endometrial cancer. SSRIs and SNRIs commonly used for VMS have documented adverse side effect profiles. Long-term antidepressant use in menopausal women raises concerns about compliance and wellbeing. In direct comparison, acupuncture's adverse event rate in these studies is substantially lower, making it a meaningful option for patients who cannot or choose not to use pharmacological agents.
He et al., 2025; Avis et al., 2016Safety findings across trials reflect treatments delivered by trained, licensed practitioners. Serious complications from acupuncture are rare overall and are primarily associated with improper technique or non-sterile equipment. All treatment should be received from qualified practitioners using sterile, single-use needles. Patients with bleeding disorders, implanted pacemakers, or who are pregnant should consult their physician before beginning acupuncture.
Feng et al., 2022; Bao et al., 2024Multiple trials found clinically meaningful improvements occurring within the first few treatment sessions. The AIM Study noted statistically significant improvement after just 3 treatments. The ACOM primary care study observed significant hot flash and emotional symptom reduction within 3 weeks. This rapid onset may support patient engagement and adherence through a full treatment course.
A consistent finding across menopausal and PCOS trials is that clinical benefits are not lost immediately when treatment ends. The AIM Study showed VMS reduction maintained at 12 months — 6 months post-treatment. The Hashimoto's RCT found TGab reduction persisting 8 weeks after treatment completion. This persistence suggests acupuncture may produce lasting neuroendocrine recalibration rather than only temporary symptom relief.
The quality of evidence differs meaningfully across conditions covered here. The PCOS fertility trial and AIM Study are well-powered RCTs with sham controls; the thyroid evidence rests largely on small exploratory RCTs and case series. The postpartum hypogalactia meta-analysis authors themselves noted critically low evidence quality and heterogeneity, calling for more rigorously designed trials before definitive conclusions can be drawn.
Across the conditions reviewed, acupuncture most often demonstrates benefit when combined with standard treatment (e.g., letrozole plus acupuncture in PCOS) or as an alternative for patients who cannot tolerate conventional therapies. It is not positioned in the reviewed literature as a replacement for pharmacological management of serious endocrine disease, but as a clinically meaningful complement to — or alternative within — multimodal care plans.
Integrative Approaches
The strongest clinical findings for acupuncture in hormonal conditions often emerge when it is used as part of a multimodal treatment approach — combining with pharmaceutical therapies, lifestyle interventions, or other traditional medicine modalities to produce outcomes greater than either approach alone.
In the landmark PCOS fertility RCT, acupuncture combined with letrozole produced significantly higher ovulation and pregnancy rates than letrozole alone — suggesting meaningful additive benefit. For hypothyroidism, case series evidence indicates that acupuncture plus fire cupping may allow for reduction in thyroxine dose while TSH normalizes. Adding acupuncture to conventional treatment consistently showed improved or accelerated outcomes.
Electroacupuncture — which applies standardized electrical stimulation through acupuncture needles — has shown particular promise in hormonal applications. EA has been shown to normalize FSH and AMH levels in PCOS, improve testicular blood flow in men within 5 minutes of stimulation, reduce depression scores in menopausal women, and modulate kisspeptin and GnRH expression at the molecular level in animal models of PCOS.
Combined acupuncture, moxibustion, and herbal medicine approaches have demonstrated efficacy in PCOS, with multimodal TCM protocols showing improvements in endometrial receptivity, uterine blood flow, serum HOXA10 expression, and pregnancy rates. A multi-center RCT found that indirect moxibustion reduced TGab and TPOab levels in hypothyroidism subjects after 12 weeks — complementary to acupuncture's demonstrated effects.
For PCOS patients, studies combining low-frequency electroacupuncture with physical activity demonstrated significant improvements in menstrual regularity, acne, and hirsutism. Given that insulin resistance and metabolic dysfunction are central to PCOS pathophysiology, acupuncture's documented effects on glucose metabolism complement exercise-based insulin sensitization strategies — supporting a holistic, multimodal management approach.
The ACOM study demonstrated that a standardized acupuncture protocol delivered within primary care — just 5 weekly treatments — produced clinically relevant reductions in hot flashes, sweating, sleep problems, and emotional symptoms in women with moderate-to-severe menopausal symptoms. The authors described acupuncture as "a realistic option for women who cannot or do not wish to use hormone therapy" — supporting integration within routine primary care.
For postpartum hypogalactia, evidence suggests that acupuncture combined with conventional care or herbal supplements lasting more than 7 days yields the most consistent outcomes for increasing milk secretion. Acupoint selection tailored to TCM syndrome differentiation — particularly using CV17, SI1, ST18, and ST36 — is supported as clinically recommended practice for individualizing PH treatment.
Referenced Literature
All content presented on this page is drawn directly from the following peer-reviewed publications and clinical trial reports. Claims have not been extrapolated beyond what the studies demonstrate.