At birth, a female’s ovaries contain all the eggs she will ever produce, which may include a million or more eggs. The eggs don't start to mature, however, until she enters puberty and attains sexual ...At birth, a female’s ovaries contain all the eggs she will ever produce, which may include a million or more eggs. The eggs don't start to mature, however, until she enters puberty and attains sexual maturity. After that, one egg typically matures each month, and is released from an ovary. This continues until a woman reaches menopause (cessation of monthly periods), typically by age 52. By then, viable eggs may be almost depleted, and hormone levels can no longer support the monthly cycle.
