--- title: Does high stress make the menstrual cycle irregular? | Niyora description: No clear pattern was found. While women with irregular cycles tended to report higher stress, stress levels did not consistently predict how long each cycle p url: https://niyora.com/research/papers/psychosocial-stress-and-the-menstrual-cycle-1999/ --- - [Niyora](https://niyora.com/) - [Research](https://niyora.com/research/) - [Library](https://niyora.com/research/library/) - Does high stress make the menstrual cycle irregular? Survey study, 1999 # Does high stress make the menstrual cycle irregular? No clear pattern was found. While women with irregular cycles tended to report higher stress, stress levels did not consistently predict how long each cycle phase lasted. Early or limited evidence 34 women tracked across 120 recorded menstrual cycles ## What they did Researchers tracked 34 women over 120 menstrual cycles. They measured stress through questionnaires and urine hormone tests (adrenaline, noradrenaline, and cortisol), and tracked whether cycles were normal, abnormal, or unclear. ## What they found No consistent relationship emerged between stress levels and follicular or luteal phase length within individual women. There was a weak trend for women to report higher stress during abnormal or unclear cycles compared to normal cycles, but the relationship was not clear or strong. ## What it means for you Stress may not be a direct cause of irregular menstrual cycles, though there may be a weak connection. The main limit is that this was an observational study that did not control for other factors affecting both stress and cycles, such as sleep, diet, or exercise. 34 Women in study 120 Menstrual cycles tracked ## About the study Original title Psychosocial stress and the menstrual cycle Authors Sanders KA, Bruce NW Journal Journal of biosocial science Year 1999 Study design Survey study Participants 34 What was tested None (observational tracking of stress and cycle patterns) Read the paper [doi.org/10.1017/s0021932099003934](https://doi.org/10.1017/s0021932099003934) ## Topics [Menstrual cycle and mood](https://niyora.com/research/topics/condition-cycle-mood/)[Stress](https://niyora.com/research/topics/symptom-stress/)[Relationships and partners](https://niyora.com/research/topics/life-area-relationships/) Research tells you what helps on average. Niyora helps on the day it hits. Calm down, see it another way, and decide what to say, with a PMS and PMDD app built by a doctor. ## Related studies Survey study, 2026 Does stress affect premenstrual symptoms in female athletes, and can coping strategies help? Survey study, 2026 Is academic stress linked to PMS severity in university students? Survey study, 2025 Does menstruation affect how well women perform at work? Survey study, 2025 What psychological and personal factors predict which university students will develop premenstrual syndrome? Cohort study, 2024 Does experiencing stressful life events change how your mood varies during your menstrual cycle? Survey study, 2023 Does stress cause women with PMDD to eat emotionally? Ask AI about this page Copy prompt ChatGPT ↗ Claude ↗ Perplexity ↗ Google AI Mode ↗ Grok ↗