Acupuncture for Depression During Pregnancy: A Randomized Controlled Trial

Depression during pregnancy is a significant health problem affecting between 3% and 14% of pregnant women, rates comparable to those observed in non-pregnant women of similar age. During pregnancy, however, treatment options are limited because of concerns about the safety of antidepressant medications for the developing baby. Many pregnant women are reluctant to take psychiatric medications, creating an urgent need for safe and effective therapeutic alternatives. Untreated depression during pregnancy can have serious consequences for both mother and baby, including complications in fetal development and impacts on maternal mental health.

Despite the significant prevalence of this problem, there are few controlled studies to guide clinicians on the best treatment options during this delicate period.

In this context, researchers conducted a rigorous clinical trial to evaluate whether acupuncture could be an effective alternative for treating depression during pregnancy. The study included 150 pregnant women, between 12 and 30 weeks of gestation, who were diagnosed with major depression according to established medical criteria. Participants were randomly divided into three groups: one group received depression-specific acupuncture, in which needles were inserted at points traditionally used to treat depressive symptoms; another group received control acupuncture, with needles inserted at points unrelated to the treatment of depression; and a third group received prenatal massage. Treatment lasted 8 weeks, with 12 sessions in total — twice weekly during the first four weeks and once weekly during the last four weeks.

To ensure the scientific quality of the study, the researchers who assessed the outcomes did not know which treatment each participant had received.

The results showed that depression-specific acupuncture was significantly more effective than the control treatments. Women who received this type of acupuncture had a mean 53% reduction in depression scores, compared with smaller reductions in the other groups. In addition, 63% of women treated with depression-specific acupuncture experienced clinically significant improvement, defined as at least a 50% reduction in symptoms, compared with 44% in the combined control group. When compared specifically with the control acupuncture group, the response rate was even more striking: 63% versus 37.5%.

The researchers calculated that approximately 5 women would need to be treated with depression-specific acupuncture for one of them to obtain additional benefit relative to the control treatments. Participants who received prenatal massage showed intermediate results, with no statistically significant difference compared with the control acupuncture group.

For patients and clinicians, these results suggest that depression-specific acupuncture may be a valid therapeutic option during pregnancy. The magnitude of improvement observed is comparable to results obtained with conventional treatments for depression, but with the advantage of presenting minimal and transient side effects. During the study, adverse effects related to acupuncture included only temporary discomfort at the needle insertion site and small occasional bleeding, none of which led to treatment discontinuation. No serious complications related to the procedure were observed.

For clinicians caring for pregnant women, these findings offer robust scientific evidence that acupuncture can be recommended as an alternative or complement to traditional treatments, especially for women who prefer to avoid medications during pregnancy. The protocol used in the study was standardized, facilitating its implementation in clinical practice.

It is important to acknowledge some limitations of this study that must be considered in interpreting the results. The study population consisted predominantly of white women with high educational and socioeconomic status, which may limit the generalizability of the results to other populations. In addition, women with other serious psychiatric or medical conditions were excluded, conditions that frequently coexist with depression in clinical practice. The acupuncture protocol used in the study differed from traditional practice in some respects: the acupuncturists who performed treatment did not directly evaluate the patients, and the acupuncture points were adjusted only once a month, whereas in usual clinical practice the therapist typically assesses and adjusts treatment at each session.

Although the researchers were able to keep assessors blinded to which treatment each participant received, it was not possible to fully maintain this condition among the acupuncturists who performed the procedures. Future studies will be needed to determine the optimal dose and frequency of treatments, as well as to test different types of control groups. Despite these limitations, this study represents an important contribution to the treatment of depression during pregnancy, offering scientific evidence that depression-specific acupuncture may be a safe and effective option for pregnant women seeking alternatives to antidepressant medications.