If you’re a woman who has ever noticed that your anxiety spikes at the same time every month, or that a week of deep sadness reliably precedes your period, or that you feel like a different person in the first half of your cycle versus the second — you are not imagining things. Your menstrual cycle has a profound, well-documented impact on your mental health. The American College of Obstetricians and Gynecologists and NIMH both publish patient guidance distinguishing premenstrual syndrome (PMS) from premenstrual dysphoric disorder (PMDD), the latter recognized as a depressive disorder in the DSM-5. Most women have never been given a clear explanation of how or why their cycles affect their minds.
The Four Phases and Your Brain
Your menstrual cycle is not just a reproductive event. It is a monthly rhythm of hormonal fluctuation that affects neurotransmitter systems, stress responses, sleep architecture, and emotional processing. Understanding the four phases can help you make sense of patterns you may have noticed for years.
During the menstrual phase (days 1–5), estrogen and progesterone are at their lowest. Many women experience fatigue, lower mood, and a desire to withdraw. This is physiologically appropriate — your body is doing demanding work, and your neurochemistry is at its most depleted point.
The follicular phase (days 6–13) brings a steady rise in estrogen, which has a well-documented positive effect on mood, energy, and cognitive function. Estrogen promotes serotonin production and enhances the brain’s capacity for learning, social engagement, and optimism. Many women feel their best during this phase.
Ovulation (around day 14) marks peak estrogen, often accompanied by elevated confidence, energy, and sociability. There is also a brief surge in testosterone. For most women, this is the high point of the cycle in terms of mood and motivation.
The luteal phase (days 15–28) is where many women struggle. Estrogen drops, progesterone rises, and the interplay between these hormones affects GABA, serotonin, and the stress response system. This is the phase where PMS and PMDD symptoms appear: irritability, anxiety, sadness, bloating, fatigue, and difficulty concentrating. For women with PMDD, these symptoms are severe enough to interfere with daily functioning.
Why This Matters for Therapy
Most therapeutic models were developed without attention to the menstrual cycle. This means that many women are being treated for anxiety or depression without anyone asking when in their cycle the symptoms are worst. This is a significant clinical oversight.
Cycle-aware therapy means tracking the relationship between your menstrual cycle and your mental health symptoms. It means recognizing that a woman who experiences debilitating anxiety for ten days every month may not have generalized anxiety disorder — she may have a hormonally driven anxiety pattern that requires a different approach. It means distinguishing between a persistent depressive disorder and a cyclical mood pattern that is estrogen-dependent. These distinctions matter because they change the treatment plan.
At Denver Catholic Counseling, we incorporate cycle awareness into our work with women. We may ask you to track your symptoms alongside your cycle for a month or two before settling on a diagnosis. This is not because we doubt your experience — it is because we want to treat the right thing in the right way.
Catholic Women and Cycle Literacy
Catholic women who practice natural family planning (NFP) often have an advantage here: they are already tracking their cycles in detail. The fertility awareness that NFP cultivates can be a powerful tool for mental health when it is combined with an understanding of how hormones affect the brain. If you already chart your cycle, adding a simple mood and symptom log can reveal patterns that both you and your therapist can use.
This is also an area where the Catholic respect for the natural rhythms of the body aligns with good clinical practice. Rather than overriding the cycle (though medication is appropriate when symptoms are severe), cycle-aware therapy works with the body’s natural rhythms. It asks: what does your body need in each phase? What coping strategies work best when estrogen is high versus when it drops? How can you structure your life to accommodate, rather than fight, your biology?
When to Seek Help
If your menstrual cycle is significantly affecting your quality of life — your relationships, your work, your parenting, your prayer life — it is worth talking to both a medical provider and a therapist. Medical evaluation can rule out thyroid issues, anemia, or other conditions that mimic hormonal mood changes. A therapist can help you develop phase-specific coping strategies, address any underlying anxiety or depression that the cycle is exacerbating, and navigate the treatment options available to you.
You do not have to accept half a month of suffering as “just being a woman.” Your hormonal health is your health, and it deserves the same attention and care as any other aspect of your wellbeing.
Our practice in Greenwood Village serves women throughout the Denver area and across Colorado. If your cycle is affecting your mental health, we’re here to help you understand why and what to do about it.
“I praise you because I am fearfully and wonderfully made; your works are wonderful, I know that full well.” — Psalm 139:14