At birth, most women had around 2 million ooctyes or eggs contained within immature folliciles.

According to a recent article in “Sexuality, Reproduction and Menopause”:

• At 28 weeks’ gestation, a developing female fetus has a maximum of 6 to 7 million immature eggs
• At birth, around 2 million eggs remain within immature follicles
• At puberty, there are about 500,000 follicles remaining
• At 38 years of age, around 25,000 follicles remain
• From 38 to about 51 years of age, follicle loss accelerates until the ovaries stop working

— © California IVF: Davis Fertility Center, Inc. male and female infertility doctors in Northern California near Roseville, Sacramento, Fairfield, Stockton and the San Francisco Bay Area.

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