Obesity is a significant risk factor for erectile dysfunction (ED), and its impact is increasingly relevant in Riyadh due to urban lifestyles, dietary habits, and reduced physical activity. Excess body weight affects erectile function through multiple physiological, hormonal, and psychological pathways, making it an important contributor to sexual health issues among men. Physiologically, obesity is closely linked to cardiovascular problems such as atherosclerosis, high blood pressure, and impaired blood flow. Erections rely on healthy blood circulation to the penile tissue, and vascular damage associated with obesity reduces the ability to achieve and maintain sufficient rigidity. Additionally, excess fat, especially around the abdomen, increases inflammation and oxidative stress, which can further compromise vascular function and erectile health. Hormonal imbalances are another critical factor. Obesity often leads to lower testosterone levels because excess fat tissue increases the conversion of testosterone to estrogen. Reduced testosterone not only lowers libido but also weakens the structural integrity and responsiveness of erectile tissue. These hormonal changes can exacerbate age-related or lifestyle-related erectile difficulties.