Well I wouldn´t expect there to be mutations as such. Perhaps my definition of mutation is off, but I wouldn´t have thought that some chambers in a penis expanding, and some new cells begin created (because that is what happens when your penis grows when you´re young, new cells) would be dangerous.
I´ve done PE on and off for a couple of years, but really a month ago I probably only had a few hours jelqing and kegeling in for all that time. Now I´m in a solid routine because I´m unhappy about my size.
So far, after two weeks in the routine I have a gain. It´s not a normal PE gain, as in expansion or ligs being stretched (although I hope they´re on their way) it´s increased erection health. Through kegels and jelqing my erection is harder and much more veiny and has gone up by at least 1/8” which to me, girth-wise is very welcome.
It is my current view that PE, on the lighter side, is good for you. I would agree that constant stressing and battering of the penis may take it´s toll, but while you can do kegels and jelq… I think there´s hope for imporovement.
I know that some doctors recommed kegels and jelqing when patients complain of a penis that is too small to be useful.