- by Milton Keynes
- 07 24, 2024
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Women seeking to defer motherhood are often encouraged to check their fertility. Though , the effect of time’s passage varies. Some 35-year-olds find they cannot get pregnant. Others manage at the first attempt.The main causes of fertility’s reduction with advancing years are declines in the number and quality of the eggs in a woman’s ovaries. Unlike men, who throughout their post-pubertal lives, albeit in ever-decreasing quantities, all of a woman’s potential eggs develop while she is still a fetus. A newborn girl has over 1m of them. By puberty, she is left with about 400,000. When the menopause arrives, that has been whittled down below 1,000, which are likely to be duds.
