Mary Claire Haver
speaker
806 appearances
2 recordings
1 series
first heard Sep 2026
last heard 15 Sep
Mary Claire Haver’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 2 in all, peaking in Sep 2026 with 2.
Appearances
It regulates the metabolic rate of the entire follicle.
We need estrogen as women, which extends our antigen phase, the growth phase.
And then we need a stable inflammatory state.
That chronic inflammation actually disrupts the normal cycling of hair.
So when several of these shift at once, which is exactly what happens around perimenopause and menopause and postpartum, the follicle falters.
There's also a seesaw between estrogen and androgens like testosterone or dihydrotestosterone.
Estrogen extends the growth phase of the hair cycle.
Androgens, DHT, dihydrotestosterone in particular, shrink the hair follicle over time.
And this is important.
This process is called miniaturization.
A thick, juicy, healthy hair follicle suddenly becomes much thinner, much smaller, and in premenopause, estrogen is winning in our hair follicles.
In postmenopause, our estrogen levels drop,
and then the androgen effects take over, and the follicle gets smaller with every single hair cycle.
So the same shift that's changing your sleep, your bones, and your brain is also changing your hair.
Stress is real here as well.
Stress does affect the follicle.
Cortisol directly suppresses the hair follicle stem cells.
Translation, so when you say my hair is falling out from stress, you're not being dramatic.
You're describing a documented molecular pathway that we actually know about in science.
The problem is when your doctor said it's just stress, he's ruling out the dozens of other causes that might be leading to your hair loss and the workup that you actually deserve.
Showing 41–60 of 806 · page 3 of 41
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