Hello dear, Understand your concern It is not necessary that masturbation can cause ED. But in some case it cause ED Please first note the disadvantage of excessive masturbation: 1. Drowsiness 2. Weakness: due to loss of protein and calcium 3. Back pain, pelvic pain 4. Testicular pain 5. Rare: penile fracture 6. May be decreased sperm count 7. Psychological side effect Advantage of masturbation: 1. Reduce depression 2. Releasing of endorphin: good for prostate, decreased prostate cancer Not necessary in all person this side effect will occur. You should check your sperm count for confirmation, but i think it will be normal. You should do moderate masturbation once in 3-4 days. Following are the cause of ED: fatigue, stress, relationship issues, performance anxiety, alcohol consumption, diabetes, obesity, tobacco use, enlarged prostate gland. So please do health check up to exclude above causes.. Take following advice 1. Start exercising, losing weight, stopping smoking and alcohol if you are taking 2. Do hormonal analysis and seminal fluid/sperm analysis 3. Talk with your doctor 4. Do discussion with your partner that help in gaining psychological trust Hope this may help you. Best regards Dr. Sagar