I'm a beginner. I've been doing JP's 90 for a week now and have been browsing the site in that time. My question is related to erectile dysfunction. I know that everyone on the site is really concerned about safety first and thats great, so my question is this.

Ive read quite a few other places that jelqing will give you ED regardless of the safety precautions you take and also that it will make you lose sensation in your penis again regardless of safety precaustions. Is there any truth to this? I was intrigued because nowhere in the forums did I see anyone dispelling these claims.