The AFC is crucial for several reasons: 1. Fertility Assessment: A higher AFC generally indicates a better ovarian reserve, which is associated with higher chances of natural conception and success in assisted reproductive technologies (ART) like IVF. 2. Menstrual Cycle Regulation: The number of antral follicles can influence the regularity of menstrual cycles. Women with a low AFC may have irregular cycles or experience early menopause. 3. Diagnosing Disorders: Conditions such as Polycystic Ovary Syndrome (PCOS) are characterized by a high number of antral follicles. Conversely, a low AFC can be a sign of Premature Ovarian Failure (POF).