The Rhythmic Nervous System: Trauma, Estrogen, and the Inner Seasons of Women
- sarahtuckercounsel
- Apr 21
- 7 min read
Updated: Apr 28
“The psyches and souls of women also have their own cycles and seasons of doing and solitude, running and staying, being involved and being removed, questing and resting, creating and incubating, being of the world and returning to the soul-place.” — Clarissa Pinkola Estés
A brief note on scope: I write from the perspective of a trauma therapist integrating insights across clinical experience, emerging research, and interdisciplinary perspectives. I am not an endocrinologist or neuroscientist, and this piece is not intended as medical advice. The science of hormones, trauma, and the brain is evolving, and our understanding will continue to deepen over time.
Women’s bodies and minds move in cycles; shifting, flowing, responding. We live in a culture that often does not understand cyclical ways of being or living. It is not a coincidence that modern life is largely disconnected from both the cycles of women and the cycles of nature. The cycle is not something to ignore, manage, or pathologize, but something to attend to. It is something that reveals us to ourselves; our inner wisdom and our attunement to the wider rhythms and seasons of life.
As a trauma therapist working primarily with women, I often consider how these rhythms shape our engagement with the world, our relationships and the ways we heal. A central question guides this exploration: might some phases of the menstrual cycle offer greater ease for trauma processing and emotional healing? And how might cultural understanding (or misunderstanding) of these rhythms shape women’s capacity to live in attunement with their bodies? And conversely, what happens to a cyclical body when it is continually asked to override its own rhythms in order to function within a linear world?
A Rhythmic Nervous System in a Linear World
The female nervous system is not designed for constant, linear regulation. It is rhythmic, shaped by hormonal fluctuations, lived experience, and the imprint of trauma. Across an approximately 28-day infradian cycle, internal states shift in patterned ways, influencing emotion, cognition, and stress response.
Yet these rhythms unfold within a culture largely organized around a 24-hour cycle; one that mirrors male hormonal patterns and privileges consistency, output, and predictability. Women are therefore asked to function in alignment with a system that does not reflect their underlying biology.
This mismatch is not incidental. Historically, the male body has been treated as the default human model, while the female body was often excluded from research. Only in 1993 was the inclusion of women in federally funded clinical research formally required. Much of women’s health, including the interaction between hormonal cycles and the nervous system, remains under-examined.
When a cyclical body is held within a linear world, its natural fluctuations are easily misinterpreted. Variability becomes framed as instability. Sensitivity becomes pathology. Rhythms that carry information are instead treated as problems to manage or suppress.
But what if these shifts are not signs of dysregulation but expressions of a different kind of regulation altogether?
Hormones Shape the Terrain of Experience
Estradiol influences how the brain detects threat, encodes memory, regulates emotion, and updates danger responses. Higher estrogen states may support improved prefrontal regulation and aspects of fear extinction, while lower estrogen states may be associated with increased vigilance, emotional intensity, and stronger encoding of threat-related memory.
Fear extinction, the brain’s ability to learn that something once dangerous is now safe, is central to trauma healing. It does not erase memory, but allows the nervous system to update old predictions in light of present safety.
Regulation, then, is not a fixed state but a shifting capacity influenced by both internal biology and external context.
The Second Arrow and Cyclical Suffering
Beyond questions of timing in healing within the menstrual cycle, there is also a deeper layer to consider: how we relate to cyclicality itself. Not only as individuals in our own bodies, but as a culture that suppresses rhythmic ways of being. Technically, all bodies are cyclical bodies. Healing is shaped not only by biological timing, but by whether we meet these rhythms with attunement and respect, or dismissal or even pathologization.Over time, this repeated override of internal rhythm may not only create strain within the nervous system, but also shape how women come to relate to themselves, learning to mistrust signals that are, in fact, adaptive.
From this perspective, the Buddhist teaching of the parable of the second arrow offers a useful lens. The first arrow is the lived experience itself; the emotional intensity, fatigue, sensitivity, or discomfort that may arise within a given phase. The second arrow is our reaction to it; the shame, criticism, resistance, or attempt to control what is already present. When we relate to cyclical experience in this way, the secondary layer of struggle often intensifies the very symptoms we are trying to manage.
Yet when these same experiences are met with curiosity, acceptance, and a willingness to stay present with what is arising, something paradoxical often becomes possible: the system softens. What was previously experienced as overwhelming may become more workable, more intelligible, or more integrated, not because the experience itself has changed, but because our relationship to it has shifted.
Trauma Changes the Terrain, Not the Rhythm
Emerging evidence suggests that estradiol influences how the brain responds to threat after trauma, and that trauma itself may alter hormonal modulation of fear circuitry. This may help explain both the higher prevalence of PTSD in women and the cyclical variation of symptoms across the menstrual cycle.
Women are diagnosed with PTSD at more than twice the rate of men, a disparity now increasingly understood through the interaction of hormonal systems, stress physiology, and lived experience. Trauma-exposed women may experience altered sensitivity to estrogen’s regulatory effects, particularly during lower estrogen phases.
Importantly, these effects are not uniform. Trauma history, chronic stress load, and individual neurobiology all shape how hormonal phases are experienced. Some phases may support integration and learning, while others may bring heightened emotional intensity, implicit memory activation, and increased sensitivity to unresolved material. Healing itself may therefore be rhythmic rather than linear.
From this perspective, it is possible that different phases of the menstrual cycle may support different aspects of healing. Higher estrogen states may offer greater capacity for emotional integration, fear extinction, and the updating of implicit memory; processes that underlie trauma resolution. In contrast, lower estrogen phases may naturally support inward reflection, consolidation, and stabilization of experience. Rather than prescribing rigid timing, this invites a more attuned approach to therapeutic work; one that considers not only what is being processed, but when the system may be most resourced to engage it.
If we understand the nervous system as rhythmic rather than fixed, the menstrual cycle can be seen not as disruption, but as a patterned sequence of internal seasons; each with its own regulatory landscape, and its own invitations for how healing may unfold.
The Inner Seasons
Winter: Menstrual Phase (The Inward Turn)
When estrogen and progesterone are at their lowest, many women experience a natural inward shift. Lower estrogen states are associated with increased stress sensitivity, heightened vigilance, and reduced regulatory buffering. At the same time, changes in enhanced brain hemispheric communication and neurotransmitter activity may support reflection, intuitive processing, and emotional insight.
This phase can be a season for listening, integrating, and turning inward; a natural pause for somatic attunement and reflection. For trauma-exposed women, it may coincide with heightened sensitivity, calling for gentleness, rest, and care.
Spring: Follicular Phase (Expansion and Possibility)
As estrogen rises after menstruation, many women experience increased energy, motivation, cognitive flexibility, and focus. Estradiol may enhance dopaminergic and prefrontal functioning, supporting executive function, learning, and future-oriented thinking.
This is a season of exploration and engagement; a time to plant seeds both literally and figuratively, and to approach life with curiosity and openness. From a trauma perspective, the nervous system may be more receptive to learning, new experiences, and relational connection during this phase.
Summer: Ovulation (Connection and Expression)
At peak estrogen, the system is often primed for relational engagement. Increased verbal fluency, social motivation, and affiliative behavior may support visibility, collaboration, and expression.
Trauma processing may, for some individuals, feel more accessible in this phase. Higher estrogen states may support aspects of fear extinction, reduced amygdala reactivity, and stronger prefrontal regulation; processes involved in updating emotional memory and integrating corrective experiences.
Autumn: Luteal Phase (Discernment and Sensitivity)
As progesterone rises and estrogen fluctuates, the nervous system often shifts inward again. While progesterone metabolites may support calming processes, this phase is associated in many women with increased stress sensitivity, emotional reactivity, and mood variation.
For trauma-exposed women, lower estrogen phases may be associated with increased PTSD symptoms, including intrusive memories and sleep disruption. Women with PMDD also demonstrate heightened sensitivity to hormonal fluctuations, sometimes in connection with trauma histories, although causation has not been established.
This is a season of discernment, boundary-setting, and emotional clarity, where sensitivity may serve a protective and organizing function.
Perimenopause (The Transitional Season)
Perimenopause introduces more irregular estrogen patterns. The brain adapts by adjusting receptor density and neural connectivity, which may contribute to brain fog, sleep disruption, mood shifts, and increased stress sensitivity. For trauma-exposed women, these shifts may amplify prior vulnerabilities while also creating opportunities for new forms of attunement and integration.
Viewed through a culturally informed, women-centered lens, perimenopause can be understood not as decline or instability, but as reorganization; a shift in rhythm that invites reflection, adaptation, and self-knowledge. For more on this, please see my other article titled “Perimenopause as a Portal to Self”.
Returning to the Soul-Place
There are seasons for movement, for reaching outward, for shining in the world. And seasons for stillness, for folding inward, for listening to the quiet currents of the body. Seasons for expression, for grief, for celebration, for learning, and for integration.
What emerges across these cycles is not a problem to solve, but a patterned intelligence; shaped by biology, held within the nervous system, and interpreted through culture.
Estradiol shifts the terrain of perception. Trauma alters the sensitivity of that terrain. And the way we meet our internal experience determines whether that sensitivity becomes suffering or integration.
The work is not to straighten the tides or force the nervous system into sameness, but to learn the language of its ebbs and flows and to notice when we are adding a second arrow through resistance, rather than allowing experience to move with awareness.
The body does not betray. It remembers. It speaks.
For trauma-exposed women, attuning to these rhythms is not merely observation; it is communion.
And when these rhythms are continually met by systems that cannot receive them, the cost is not only personal, but collective; a quiet estrangement from the intelligence of the body itself.
What has been called instability is, in truth, the pulse of life itself: a rhythmic intelligence, shaped by biology, filtered through experience, and either constrained or softened by how we meet it.
A living map of return.
References
Glover, E. M., & Jovanovic, T. (2019). Estrogen and extinction of fear memories: Implications for posttraumatic stress disorder treatment. Biological Psychiatry, 86(3), 197–204. https://doi.org/10.1016/j.biopsych.2019.01.003
Stevens, J. S., et al. (2025). Hormonal mechanisms of women’s risk in the face of traumatic stress. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2524903122
Stockhorst, U., & Antov, M. I. (2022). Modulation of fear extinction by stress, stress hormones and estradiol: A review. Frontiers in Behavioral Neuroscience, 16, 9189376. https://doi.org/10.3389/fnbeh.2022.9189376
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