Dr. Rachel Rubin

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3,407 appearances 3 recordings 3 series first heard May 2025 last heard 22 Jun

Dr. Rachel Rubin’s voice in public audio — every appearance, attributed to the second.

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Recordings per month over the last 12 months — 2 in all, peaking in Jun 2026 with 1.

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So you get this big surge of estrogen.

And then when the egg pops out of the ovary, right, that's what's going to make a baby if it gets fertilized.

There is a shell of the egg, right?

The egg has a shell, which makes progesterone.

So the second half of the cycle, there's progesterone around.

OK, first half of the cycle, no progesterone.

And so that second half of the cycle, the shell has making progesterone.

And then when you don't have fertilization, the shell starts to break down.

And that natural breakdown is a drop in progesterone, which causes the lining of the uterus to shed and you get a period again.

And so it's estrogen goes high in the beginning and then pops out an egg.

Progesterone gets high in the second half.

Then they both fall and you have a period.

And so the hormones being low in the beginning, estrogen is not zero.

It's about 50.

Okay, so when we talk about numbers, if you get your hormones checked, if they're at their low, it's like 50.

But when you ovulate, your estrogen may be 150, 200, 300.

And then when you're pregnant, your estrogen may be as high as 3,000 or higher, right?

It's very many thousands.

And so these hormones have actions in our bodies.

And so the reason it's important is because when we give back hormone therapy, we're

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