eli5: Why do women only have their period/ are fertile for approximately 50 years if they’re born with millions of eggs?

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I’m an uneducated man on this subject. Please don’t judge. I thought women release a single egg every cycle normally and that would add up to about 600 eggs in a lifetime, if that were the case. Thanks for the knowledge!

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Anonymous 0 Comments

When the ovaries develop in utero, there are about 6 million eggs in them. By the time the baby is born, there are 1-2 million. Before puberty, a girl loses about 10,000 eggs per month. After puberty, her hormones have a protective effect and she only loses about 1,000 a month.

After puberty, only one egg matures and drops per month; the rest just resorb.

This explains it in more detail: https://www.healthline.com/health/womens-health/how-many-eggs-does-a-woman-have#eggs-lost-each-month

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