<s>[INST] i am 30yrs, height 175 cm, weight 85 kg, male. i never had any medical problems except the occasional cold or fever. My problem is that i am not able to show interest in sex with my wife. during sex also the penis take long time to get erect and then loose the erection very soon. due to this i and my wife are not able to enjoy sex. i used to masturbate a lot when i was unmarried. kindly help me. [/INST] Hi, Masturbation won't be the cause for your issue. Low interest in sex can be due to hormonal imbalance or anxiety. Going for a laboratory investigation will help you. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. S.R.Raveendran, Sexologist </s>