Erectile Dysfunction is the inability to achieve or maintain an erection firm enough for sexual activity. It is a common condition, especially in men over 40, and can be caused by physical issues (like poor blood flow, diabetes, or low testosterone), psychological factors (such as stress, anxiety, or depression), or a combination of both. ED can also be a sign of an underlying health problem and is treatable with lifestyle changes, medications, therapy, or other medical interventions.