Perimenopause and Your Mental Health: What’s Actually Happening, and Why It’s Not “All in Your Head.”
You’re lying awake at 2am again. Your heart is racing for some reason. You snapped at your partner over something so small it embarrasses you now. You forgot a word mid-sentence in a meeting today — a word you’ve used a thousand times. And somewhere underneath all of it, a quiet, persistent anxiety has moved in and started rearranging the nature of your mind.
If you’re in your late 30s, 40s, or early 50s, this may not be stress. It may not be “just getting older.” It may be perimenopause — and your brain is very much involved. This is the first blog in my perimenopause series, because I have a lot to say about this. This one spells out the research and will validate you ladies because this is something we can and will navigate but it starts with being informed.
You Are Not Imagining This
For decades, women have brought these exact symptoms to their doctors and been told it’s stress, it’s normal aging, it’s nothing. Leading OB/GYN and menopause educator Dr. Jen Gunter has pushed back directly on this pattern, noting that perimenopause is frequently under-recognized, despite being when symptoms are often most severe — far more symptomatic, in fact, than menopause itself.
A 2024 global analysis of the burden of anxiety disorders during perimenopause found that hormone fluctuations during this transition — which can last anywhere from two to three years, or for some women, up to a decade — bring with them real, measurable emotional, cognitive, and physical symptoms: depression, irritability, hot flashes, night sweats, and memory loss, all of which meaningfully affect quality of life. This isn’t a character flaw or a failure to cope. It’s biology.
What’s Actually Happening in Your Brain
Perimenopause isn’t simply about your period becoming irregular. Dr. Mary Claire Haver, the OB/GYN behind The New Menopause and the newly released The New Perimenopause, describes this stage as the “hormonal zone of chaos” — and she’s emphatic that the transition starts in the brain, not just the reproductive system. Mood changes, anxiety, and irritability often show up alongside weight changes and sleep disturbances, frequently before any change in your cycle is even noticeable.
Some women begin to feel this shift as early as their mid-30s — irregular periods, worsening PMS, new anxiety that wasn’t there before, sleep that won’t come easily, weight that won’t respond the way it used to. These aren’t separate, unrelated problems. They’re early signs of the same underlying hormonal shift.
Reproductive psychiatrist Dr. Vesna Pirec explains that it’s not necessarily the absolute level of estrogen that drives mood changes — it’s the sharp, unpredictable rise and fall of estradiol during this transition. Your hormones aren’t just declining steadily; they’re swinging, and your brain is trying to keep up with the turbulence.
The Numbers Are Real
This is where the research becomes genuinely validating. Dr. Ruta Nonacs of the Massachusetts General Hospital Center for Women’s Mental Health notes that women are two to four times more vulnerable to developing depression during perimenopause than at other times in their lives — with risk factors including a personal history of depression, a history of postpartum depression, and severe hot flashes or night sweats.
Dr. Crystal Clark, a reproductive psychiatrist and Canada Research Chair in Reproductive Mental Health, puts the depression rate during this transition as high as 40 percent of women. And yet, she notes, so many are still told to simply “tough it out.”
One sobering statistic from Dr. Haver’s research team: less than 23 percent of women with severe hot flashes ever get their symptoms formally documented by a provider, and only about 6 percent receive appropriate hormone therapy despite being medically eligible for it. If you’ve felt dismissed, unheard, or like you were somehow failing to manage something that should be manageable — the data suggests you were facing a real, under-treated medical transition, not a personal shortcoming.
An Important Note: Not Everyone’s Experience Is the Same
It’s worth saying clearly: perimenopause does not guarantee a mental health crisis. Dr. Hadine Joffe, a Harvard-affiliated psychiatrist and women’s mental health specialist, emphasizes that most women don’t experience an episode of major depression during this transition — and it’s actually quite unusual to have a first-ever depressive episode at midlife with no prior history.
A 2024 review in The Lancet found that simply worrying about the possibility of anxiety or depression during menopause may itself shape what a woman expects and experiences. This doesn’t mean your symptoms aren’t real — it means that fear and uncertainty can compound an already difficult transition, which is exactly why clear information and real support matter so much right now.
Why This Matters for How You Move Forward
Understanding what’s actually happening in your body and brain changes everything about how you respond to it. This isn’t about willpower. It isn’t about needing to meditate your way out of a hormonal shift, and it isn’t about simply waiting it out either. It’s about getting the right support — medical, psychological, and somatic — for what is a real, time-limited, biologically driven transition. In the next post in this series, we’ll go deeper into the specific mental health supports that the research shows can genuinely help.
If you’re navigating anxiety, mood changes, or feeling like a stranger in your own mind right now, you don’t have to figure this out alone. I offer a free 15-minute consultation to talk through what you’re experiencing and what support might look like for you.
→ Book your free consultation at meganholleran.com
Megan Holleran, LMHC, LCMHC is a licensed mental health counselor in Florida and Vermont specializing in anxiety, trauma, and the emotional and psychological shifts of perimenopause and midlife. She offers therapy, coaching available worldwide, and psychedelic integration support.
This post is for informational and educational purposes only and is not a substitute for individualized medical or psychiatric care. If you are experiencing a mental health crisis please contact a qualified healthcare provider or call 988, the Suicide and Crisis Lifeline.
Sources
Dr. Jen Gunter — Vajenda (Substack) and The Menopause Manifesto
Dr. Mary Claire Haver — The New Perimenopause (2026) and The New Menopause (2024)
Global, regional, and national burden of anxiety disorders during the perimenopause (1990–2021) and projections to 2035
Dr. Hadine Joffe, Mass General Brigham, Mary Horrigan Connors Center for Women’s Health
Dr. Crystal Clark, University of Toronto / Women’s College Hospital
Dr. Ruta Nonacs, MGH Center for Women’s Mental Health
Dr. Vesna Pirec, reproductive psychiatrist
The Lancet (2024) review on menopause and mental health expectations