Women with bipolar disorder face overlooked premenstrual symptom burden

A team of researchers in Norway has documented something clinicians have largely overlooked: women with bipolar disorder who menstruate regularly experience far more severe premenstrual symptoms than those whose cycles are irregular, and they are also significantly less likely to use hormonal contraceptives. The finding emerged from a survey of 267 women of reproductive age with bipolar disorder and will be presented at the 2026 ECNP Congress in Munich.

The numbers tell a stark story. Among the women surveyed, 62 percent had regular menstrual cycles, and these women reported premenstrual symptoms—irritability, anger, relationship strain, physical discomfort, and significant disruption to work and daily life—occurring in nearly every or every premenstrual phase over the past year. The remaining 38 percent, whose cycles were irregular, reported these same symptoms far less frequently. What makes this pattern especially striking is what the researchers discovered about contraceptive use. Nearly all the women in the study—93 percent—had tried hormonal contraceptives at some point. But women with regular cycles were notably more likely to have stopped using them, citing side effects and expressing reluctance to continue with hormonal treatment.

Dr. Sofie Ragnhild Aminoff, the lead researcher at Oslo University Hospital, called the finding unexpected. It raises a question that has no clear answer yet: are some women with bipolar disorder simply more sensitive to hormonal contraceptives than others, or might certain formulations actually help some patients while harming others? The research suggests the answer may differ from woman to woman, and that current clinical practice does not account for this variation.

Bipolar disorder itself—characterized by episodes of depression, elevated or irritable mood, and periods of relative stability—affects roughly one to two percent of women globally. In a large European country like the United Kingdom, France, or Italy, that translates to approximately 235,000 women of childbearing age. The majority of them experience some form of premenstrual disturbance, either as worsening premenstrual symptoms or as exacerbations of their bipolar symptoms tied to their cycle. Yet reproductive mental health in women with severe mental illness remains profoundly understudied.

Aminoff has encountered many women whose mood, psychotic symptoms, or suicidal thoughts fluctuate with their menstrual cycle—experiences that reshape their daily lives but for which clinicians have almost no guidance to offer. She emphasized that premenstrual symptoms in women with bipolar disorder need to be treated as a serious clinical concern, not dismissed or minimized. Many women report that their symptoms go unheeded by their doctors. Few receive targeted treatment. Assessment of premenstrual symptom burden, paired with individualized hormonal contraception and mood-stabilizing medication, should be standard practice, Aminoff noted, but it currently is not.

The researchers stress that these findings are preliminary. The data came from an online survey and has not yet undergone peer review. Still, the implications are significant enough that Aminoff called for closer collaboration between psychiatry and gynecology—two fields that rarely communicate about patients who sit at their intersection. She also emphasized the need for research that examines not only mental health symptoms but hormonal contraception and reproductive health as interconnected concerns.

Other experts in the field have echoed the urgency. Professor Louise Howard, a women's mental health researcher at King's College London, welcomed the preliminary work as addressing a gap that has persisted far too long. Dr. Clare Dolman, co-chair of the Bipolar Commission and an ambassador for Bipolar UK, went further, noting that sensitivity to hormonal change may signal vulnerability to relapse at other critical moments—pregnancy, childbirth, perimenopause—making this research not merely academic but potentially protective. Women's mental health, she said, has been neglected for too long. This study suggests one reason why: the intersection of reproductive biology and psychiatric illness has been left almost entirely unexamined.