Dear service user, Thanks for writing to healthcaremagic. I got your concern regarding inability to have erection as compared to previous acts. The common causes of erectile dysfunctions are . Diabetes (nerve damage and vessels narrowing) 2. Some medicines like anti depressants and anti psychotics 3. Performance anxiety (the most common reason) 4. Psychiatric disorders (depression, anxiety) 5. Alcohol use (nerve damage and testicular injury) 6. Smoking (vessels narrowing) 7. after some surgical procedures (nerve damage) Smoking causes vessel narrowing and leads to erectile dysfunction. So, the problem mentioned needs attention and you should try to quit smoking. You can consult psychiatrist, who can help you to quit by enhancing your motivation to do so. He may offer the treatment options to quit smoking. Masturbation is not a disease hence no adverse effects. It does not cause erectile dysfunction, so do not worry about it. Hope, I have answered your question. If you have any further questions I will be happy to help. Wish you good health.