Erectile dysfunction (ED) can be caused by a mix of physical and psychological factors. Common physical causes include diabetes, high blood pressure, heart disease, obesity, and low testosterone. Lifestyle choices like smoking, excessive alcohol use, and lack of exercise can also contribute. On the psychological side, stress, anxiety, depression, and relationship issues play a big role. Sometimes it's a combination of both. If you're experiencing ED frequently, it's important to talk to a doctor. It could be a sign of an underlying health issue, not just a bedroom problem. The good news is that ED is treatable in most cases.