Last updated 2026-07-19
Are Perimenopause Mood Swings Really About Hormones, or Something Else?
Hormones are part of it, but usually not all of it. Depression risk during perimenopause and in the years right after menopause is roughly double what it is at other life stages, and mood symptoms are common enough that most women notice some version of this shift. The more useful question isn't whether it's "real" (it is), it's what's actually driving a given rough week.
What's actually happening
Estrogen and progesterone swing significantly during perimenopause, and according to Harvard Medicine Magazine, estrogen receptors throughout the brain influence serotonin, dopamine, and norepinephrine activity, all of which affect mood stability. Progesterone in particular has a calming, anti-anxiety effect, so when it drops, that effect drops with it. This is a real, direct hormonal mechanism, not "just stress."
The hot flash and anxiety loop
Here's a detail worth knowing: it runs both directions. The Menopause Society notes that hot flashes can intensify anxiety, in part because of how sudden and unpredictable they are, and that anxious thoughts may in turn trigger hot flashes. That's not a coincidence to untangle once, it's a loop worth noticing over time: a rough anxious stretch and a rough hot-flash stretch are often not two separate problems.
It's rarely hormones alone
Harvard Medicine Magazine's review also points to sleep disruption from night sweats and hot flashes, physical symptoms that create their own anxiety, and ordinary concurrent life stressors as real contributing factors alongside the hormonal shift. The honest summary from that research: hormones alone don't explain all of it. Cognitive changes like brain fog often show up in the same stretch of weeks too, for related reasons.
Why tracking your own pattern is the missing piece
None of this tells you whether your own worst mood weeks actually line up with your worst sleep, a rough run of hot flashes, or something unrelated to perimenopause entirely. That's specific to you, and it's exactly what a weekly pattern, built from your own daily logs and your own Apple Health data, can start to show, rather than a general mechanism that may or may not be the main driver in your particular week.
This article describes general patterns from published research. It is not medical advice, diagnosis, or a treatment recommendation, and Liora is not a medical device. If mood changes are significant, persistent, or affecting your daily life, talk with a qualified clinician. This article, and Liora's own weekly insights, exist to make that conversation more concrete, not to replace it.