Is masturbation harmful for a 19 year old boy??

I don't think masturbation is harmful at any age, male o female.

Ummm. By law, 19 years old is considered an adult, although still a teen, not a boy. No, it isn't harmful and it is quite normal.

Masturbation is natural and it's "normalness" should never be questioned.

Not at all. I pormise you/he won't go blind from it! ;)

No, not all is it harmfull.

Explain your definition of harmful please.

I agree with every one else a Clean Guns a happy gun:just watch where it's pointing when it goes off
Plus by holding back when it tries to fire. Like slowing down till you don't fire or stopping to change hands you can build control and if you can maintain control and not fire so fast the women will apreciate it later in yer life

is masturbation harmful for a 19 year old boy?????
If it was we'd all have issues :)

Of course if you're doing it 5 times a day, yes that is a problem, but a few times a week is totally normal.

is masturbation harmful for a 19 year old boy?????

Not if you use a good lubricant. Otherwise you could rub yourself sore. By a good lubricant I mean something like K-Y jelly, not motor oil. I keep forgeting some folks might not know.

Are we talking once a day or 20 times a day?