Several factors have been associated with an increased risk for infertility, including being 35 years of age or older, a history of pelvic inflammatory disease , and various lifestyle behaviors . There has been speculation that exposure to certain environmental toxins may cause infertility, but the relationship has not been proven.
Conception can t happen without ovulation.
The absence of ovulation, anovulation, may be affected by the factors mentioned above, but its most common cause is polycystic ovarian syndrome . The proportion of the female population that is infertile increases with age. Because fecundity, or the ability to conceive, naturally decreases over time as part of the normal aging process. If left untreated, bacteria make their way up through a woman s uterus and into her fallopian tubes, ovaries, and surrounding tissues. PID does serious damage to a woman s reproductive tract, often scarring and blocking the fallopian tubes .