Women are born with approximately 2 million eggs in their ovaries. Before a girl reaches puberty, about 11,000 eggs die every month. Thus, in her teenage years, a woman has only about 300,000 to 400,000 eggs available. From this point on wards, about 1000 eggs are utilised every month. This has nothing to do with any form of birth control, pregnancy, hormone production, health, lifestyle or nutritional supplements. Eventually, a woman reaches menopause when she has no viable eggs left.