Hello, There could be various causes for your erectile dysfuntion which ranges from psychological reasons to physical reasons. The most common psychological causes range from Depression Anxiety Guilt about past failed sexual encounters Having affair with someone else s wife Having doubts on your wife etc. Common physical causes apart from high blood pressure and diabetes are Being overweight Leading sedentary life Smoking,taking alcohol,taking medications for high cholesterol or anti depressants etc. What to do... Do regular exercises Reduce your weight and try to be in your required BMI Quit alcohol and smoking. Do yoga and deep breathing exercises You should improve with these suggestions but if you don t improve then,it would be a good idea to consult a urologist and get managed properly. There are medicines like VIAGRA ,which can be used,but after talking to your doctor. Thanks