Andrew Huberman· PhD
And it's marked by the presence of FSH and some other things, but we can really think about it as marked by FSH from the pituitary and by estrogen, or estradiol, made within the ovary.
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The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
And it's marked by the presence of FSH and some other things, but we can really think about it as marked by FSH from the pituitary and by estrogen, or estradiol, made within the ovary.
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In females, when estrogen is relatively low-- but not zero but is relatively low during that first follicular half of the ovulatory cycle-- it actually triggers negative feedback on LH and FSH so that not too much is produced.
Each egg grows inside a small fluid fil structure called a follicle. The brain sends out follicle stimulating hormone or FSH well named gets a follicle to grow. As the follicle grows, it makes estrogen. This is called the follicular phase.
in the first half of that menstrual cycle which we'll call follicular phase we see a decline in estrogen and this stimulates something called FSH or follicle stimulating hormone to be secreted from the pituitary gland in the brain and the FSH stimulates the follicles in the ovaries so we said you were born with you know all these eggs so it's stimulating all those little follicles to grow these growing follicles are what more estrogen secretion