How can someone's overall health impact their ability to bear children?

Health and fertility: This is a complicated questions and depends on multiple different factors. In general, the healthier the woman is, the more likely she is to have an easy and uneventful pregnancy. However, age also affects pregnancy as well. After age 35, mothers are considered to have advanced maternal age, and even if they are in perfect health, have a higher incidence of infertility and birth defects