Infertility is the inability to conceive after a year of regular, unprotected intercourse. It affects both men and women and can be caused by various factors, including hormonal imbalances, blocked fallopian tubes, low sperm count, or age-related issues. Treatments for infertility include medications, surgery, assisted reproductive technologies like IVF, and lifestyle changes. Psychological and emotional support is also crucial for those experiencing infertility. Early diagnosis and intervention can increase the chances of successful treatment.