Noooooooooooooo!!! :no:
The ONLY "medical" indications there ever has been was the "indications" concocted by american anti-masturbatory ideologists in the early 20th century, not that american doctors and hygienists et consortes were the only one who thought that masturbation was one of the worst health problems there ever was.
But specifically american was a) that cir
cition in young boys became a majority behaviour in the 20th century; b) that conservative sexophobic forces in the 1990s (after AIDS) started to sing the good old song about cir
cition and its positive medical value. Scientific tests were made in the late 90s and the result was nil, nada,nothing. But we live in neo-victorian times...
Now if you want to read a magnificent and very fat book om the history of the anti-masturbation campaigns, get hold of Thomas Laqueur :
Solitary Sex, 2004.