Management of Menopause Symptoms with Acupuncture: An Umbrella Systematic Review and Meta-Analysis

This study represents the most comprehensive scientific review available on the use of acupuncture for menopausal symptoms, analyzing data from three systematic reviews and four new clinical trials, totaling 1,823 women. Vasomotor symptoms, particularly hot flashes and night sweats, affect approximately 80% of women during the menopausal transition and may persist for more than seven years, significantly impacting quality of life. Although hormone therapy is effective, many women cannot use it because of contraindications or prefer to avoid it because of associated risks, creating a demand for non-hormonal alternatives. The methodology employed followed rigorous scientific standards, using an "umbrella" systematic review approach that combined evidence from prior reviews with recent clinical trials.

The included studies enrolled perimenopausal and postmenopausal women with bothersome vasomotor symptoms, defined as at least moderate or interfering with daily activities. Acupuncture protocols varied between 4 and 13 points per session, with treatments lasting from 4 to 24 weeks. Some studies used standardized protocols while others employed individualized approaches based on traditional Chinese medicine. The results demonstrated statistically significant benefits of acupuncture compared with no treatment.

For hot flash frequency, the standardized mean difference was -0.66, indicating a moderate to large effect on reducing episodes. For symptom severity, the difference was -0.49, also representing a clinically relevant benefit. Quality of life showed substantial improvement with a difference of -0.93, considered a large effect by established statistical criteria. Particularly encouraging was the observation that the benefits were maintained for 6 to 12 months after treatment ended in some studies.

When acupuncture was compared with sham procedures (false acupuncture), the effects were smaller and frequently not statistically significant. This raises questions about the mechanisms of action, suggesting that part of the benefit may be attributable to nonspecific effects such as therapeutic attention and positive expectations. However, even taking this limitation into account, the authors argue that nonspecific effects are an integral part of the real therapeutic experience. Safety was favorable, with adverse events limited to mild manifestations such as small bleeding at the puncture site, transient pain, or dizziness, affecting only 2-3% of participants.

No serious treatment-related adverse events were reported. The safety profile is especially important considering that many women seek acupuncture precisely to avoid the risks of hormone therapy. The clinical implications are significant. Acupuncture has been shown to be a viable therapeutic option as adjunctive or primary treatment for menopausal vasomotor symptoms, particularly valuable for women with contraindications to hormone therapy or who prefer non-pharmacologic approaches.

The durability of effects observed in some studies suggests that relatively brief treatment courses may provide prolonged relief. Health professionals may consider acupuncture as part of an integrated care plan, particularly for patients motivated to explore complementary medicine. However, it is important to acknowledge the study's limitations. Heterogeneity across trials in terms of populations studied, acupuncture protocols, and outcome measures complicates interpretation of the findings.

Approximately half of the studies enrolled exclusively breast cancer survivors, whose symptoms may differ from those of natural menopause. The quality of sham controls varies considerably, and there is debate about what would be the ideal control for acupuncture studies. Furthermore, most studies were conducted in Western countries, limiting generalizability to other populations.