By Rachel Crowe, June 30, 2022

“Fetal females in utero by 20 weeks of gestation have close to 6 [million] to 7 million eggs. By the time of birth, that number has significantly decreased to about 2 million. The number of eggs decreases and are absorbed as the female ages. By puberty, they may have 300,000 to 400,000 eggs,” explained Kecia Gaither, M.D., board-certified in OB-GYN and maternal-fetal medicine, and director of perinatal services at NYC Health + Hospitals/Lincoln in the Bronx in New York City.

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