A woman’s fertility naturally declines with age, particularly after the age of 30. Younger women facing infertility are more likely to have medical causes, such as blocked fallopian tubes or issues related to their partner’s sperm quality. As women age, the causes of infertility often become less clear and are more frequently linked to declining egg quality. By the time a woman reaches her early 30s, the rate of egg loss accelerates, and by her mid-30s, fertility can drop more markedly. This decline in fertility is due to several factors, including decreased ovarian reserve and increased likelihood of chromosomal abnormalities in eggs, which can lead to increased miscarriage rates, particularly within the first 12 weeks of pregnancy. As women approach their 40s, the chances of conceiving naturally continue to diminish, and the risk of pregnancy complications such as gestational diabetes and preeclampsia rises. Moreover, advanced maternal age is associated with a higher likelihood of miscarriage and birth defects. However, advancements in reproductive technologies offer hope and options for women seeking to start or expand their families later in life.