No. It will not cause excessive hair, blindness, hell, or anything else. It is natural and normal. Most people do it. It doesn't make sense that it would be harmful, because the act of sex in itself is not, and masturbation is just mimicking it. The only way masturbation could be a problem is if it interferes with everyday life.
no it is not
why did olw has hamful
No it does not.
a blue whale
All of them.
i don't know what hamful is. but if you mean harmful then yes.
you would die of birth in 20 years!
Masturbation doesn't do any damage.