I have been reading up about various penis enlargement techniques over the last few months. Personally I am not interested in engaging the techniques myself, but I find it to be a fascinating topic, and one that has not been widely understood. Primarily I have been learning through PE-centric sites such as cheekycherry and Thunder's. On these sites I have never seen any mention of long-term damage due to PE, just short-term injuries like soreness or red spots. When I talked to a friend of mine in med school, however, he expressed a deep concern about the potential for long-term damage to penile tissue through such exercises as jelqing and holds. This got me to thinking, and I did a little bit of searching on the web for so-called jeqling injuries. This turned up complaints from a variety of individuals who believe that they suffered severe penile damage as a result of PE techniques, the durations of which ranging from 1 session to 4 months. They also all seemed to mention that they brought their cases to urologists, but that the urologists could not successfully pinpoint the nature of the damage. There were enough mentions of jelqing injuries of this sort that I am unwilling to immediately dismiss all of the cases as coincidences; it seems unlikely that, in 100% of the cases, the penile disfunction was completely unrelated to the onset of PE exercising. Add to this the comments of my fairly educated friend, and I am becoming concerned about the lack of thought on the safety of PE techniques. In any case, one must admit that there is little (no?) scientific study on the long-term effects of these techniques. On the other hand, I got the impression that urologists were also extremely skeptical about the viability of these techniques in increasing size, but it seems that a lot of people claim success, making this uninformed view of PE a little suspect. What have other people heard about the safety of PE? Other thoughts, concerns, questions?