FACT: Masturbation is healthy, especially for men.? Because repressing the primal sex drive has hazardous results for men and women.? Basically, it's "Use it or lose it".? If you go without some form of sex for very long your plumbing stops working.
I don't really see anything to back your claims other than the fact you said "fact" before the statement.
It has recently been proven to be good for keeping a healthy prostate. But that is it. No studies have concluded that it is "hazardous" to your health by not pulling it often.
Research says the health benefits come in because you're bringing increased blood flow to the area (for men and women), therefore increasing circulation, which is always a good thing. But just because it's beneficial doesn't mean you're harming your health if you don't. No one ever died from a lack of sex (or self-gratification).
"Here lies Dan who died from not getting any."