What is a womens follicle?

A woman's follicle refers to a small fluid-filled sac in the ovaries that contains an immature egg (oocyte). Each menstrual cycle, several follicles begin to develop, but usually only one becomes dominant and matures fully for ovulation. Follicles play a crucial role in hormone production, particularly estrogen, which is essential for regulating the menstrual cycle and supporting reproductive health. As women age, the number and quality of follicles decline, impacting fertility.