I had a colonoscopy and endoscopy on Monday and found out that the doctor suspect Barretts disease. I was extremely extremely extremely stressed out about it but luckily the biopsy is negative today. I was completely knocked out during the procedure. Now I can't have an erection at all. My questions is can colonoscopy cause total erectile dysfunction. I had sex with my girlfriend last Saturday, two days before the colonoscopy. Everything was fine. I am so scared that I am permanently damaged by the procedure. BTW I just turned 43. There are not much online about this two issues. The impression I got was that erectile dysfunction is not cause by colonoscopy. I asked the doctor who did the procedure and he told me it's not the colonoscopy. I also talk to another doctor in the same office and he said he had not seen that in his 40 years. I also ask a cardiologist friend of mine and he also said no. I am really really stressed out about this whole thing.