# It’s Not “Just a Period”: Hormones, Mental Health, and the Lived Experience of Endometriosis Blog Mental Health Health & Wellbeing By Guest Blog 12th May 2026 ***With thanks to our member, Natasha Gill, for this blog.*** Hormones influence far more than reproductive health. They shape mood, energy, sleep, cognition, and emotional regulation often in ways that are subtle, cyclical, and deeply personal. Within women’s mental health, this interplay becomes particularly significant when chronic conditions such as endometriosis are present. Endometriosis is commonly described in clinical terms tissue similar to the lining of the uterus growing outside of it, leading to inflammation and pain. Yet this definition only captures part of the experience. The lived reality is far more complex, where biological, psychological, and social factors intersect in ways that are not always visible. I was diagnosed with endometriosis at 24. More than 15 years later, I am still living with it. What that has taught me both personally and through my work in the therapeutic space is that endometriosis is not simply a physical condition. It is something that can quietly, persistently shape how you relate to your body, your identity, your relationships, and your sense of control. Hormonal fluctuations across the menstrual cycle particularly changes in oestrogen and progesterone interact with neurotransmitters such as serotonin and dopamine, which are central to mood regulation. For some, these changes may present as manageable emotional shifts. For those living with chronic pain, fatigue, and inflammation, they can feel significantly amplified. Each month can bring not only physical symptoms, but an emotional landscape that shifts alongside them. Persistent pain also plays a role beyond the body. It engages the nervous system, often keeping it in a heightened state of alert. Over time, this can contribute to increased anxiety, reduced emotional resilience, and periods of low mood. The cyclical nature of hormonal changes can further intensify this, creating a sense of unpredictability not always knowing how you are going to feel, physically or emotionally, from one day to the next. Alongside this, there is the experience of invisibility. Despite the impact endometriosis can have, many individuals encounter responses such as “it’s just a period.” While often said without intent to harm, such statements can minimise the complexity of the condition and the reality of living with it. Over time, this can lead to frustration, isolation, and self-doubt particularly when what is being experienced internally is not reflected or understood externally. From both personal and professional perspectives, it becomes clear that chronic illness is not just physical. There can be grief; for the life anticipated, for physical ease, or for the version of self that existed before pain became part of everyday life. There can be frustration; at delayed diagnoses, limited understanding, or the absence of clear and consistent treatment pathways. And there can be exhaustion; not only physical, but emotional. The kind that comes from continuously adapting, managing, and making sense of something that is often unpredictable. Some days involve adapting. Some days involve pushing through. And some days carry a weight that is difficult to articulate. It is also possible to appear high-functioning while experiencing significant internal distress. This discrepancy can further reinforce feelings of being unseen, particularly within systems that rely on visible indicators of wellbeing. For practitioners, this highlights the importance of adopting a biopsychosocial lens when working with clients experiencing conditions such as endometriosis. Hormonal influences, nervous system responses, and the psychological impact of chronic pain are deeply interconnected. Therapeutic work in this area may involve: - Supporting individuals in naming and validating their emotional experiences - Exploring the impact of chronic illness on identity, relationships, and self-concept - Creating space for grief, anger, and uncertainty without judgement - Encouraging the development of self-compassion, particularly in relation to the body - Working with the unpredictability and cyclical nature of symptoms Therapy can offer something that is often missing elsewhere; a space where experiences do not need to be minimised. Where both resilience and difficulty can be acknowledged together. In my own experience, therapy has been instrumental in developing self-acceptance. Not as a way of dismissing the reality of pain, but as a way of relating to it differently. Learning to hold both strength and struggle has been a central part of that process. Endometriosis challenges traditional distinctions between physical and mental health. Its impact extends beyond the body, influencing emotional wellbeing, daily functioning, and relational dynamics. Greater awareness within the counselling and psychotherapy field is essential. By recognising the role of hormonal fluctuations and chronic pain in shaping mental health, practitioners can offer more attuned and validating support. Moving beyond the narrative of “just a period” allows for a more accurate and compassionate understanding — one that reflects both the clinical complexity of the condition and the lived experiences of those affected.