Egg Factors
Eggs are essential to the success of any reproductive treatment because they make such a disproportionately large contribution to the developing embryo by comparison with sperm. Women are born with all the eggs they will ever have. Of the approximately half a million eggs in the ovaries of a newborn female, only about 300-400 will be ovulated during a woman’s reproductive lifespan of about 30 years from puberty to menopause. The vast majority of eggs undergo degeneration through a process known as atresia which occurs regardless of pregnancy, breastfeeding or the use of hormonal contraceptives.
The three major areas of egg dysfunction are:
- aging which lowers egg viability (What is Age Factor?)
- diminished ovarian reserve which reflects low number of eggs in the ovaries (How Do We Test for Ovarian Reserve?)
- irregular ovulation which is the hallmark of polycystic ovarian syndrome (PCOS)
