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Generally not good to mess about with nature like that, here's something I've just Googled
Why Vasectomy Is Risky?
Some men suffer some pretty severe side effects after undergoing the operation. How does vasectomy affect a man’s body? This is a reasonable question, which unfortunately is rarely answered, even after significant effects occur. Let’s use an analogy of a 40-year-old fire hose. You hook this fire hose up to a hydrant and turn on the water. Let the hose represent the epididymis portion of the testicles and the vas deferens, which would measure some 20 feet in length if stretched out, and let the water represent the 50,000 sperm cells a minute that a man’s body manufactures, even after vasectomy. Now, tie a knot in the fire hose. What happens? Something is going to rupture, right? That’s why fire departments don’t use 40-year-old fire hoses, and why men develop ruptures in their testicles after their vas is tied off during the vasectomy procedure.
Actually, the technical term for this phenomena is a “blowout.” According to Campbell’s Urology (a textbook for urology students and doctors) “The brunt of pressure-induced damage after vasectomy falls on the epididymis and efferent ductules…. It is likely that, in time, all vasectomized men develop ‘blowouts’ in either the epididymis or efferent ducts.” I wish I had known this before I had my vasectomy and started experiencing some of the negative effects of that rupturing process.
Autoimmune Responses
But that’s not all. When the rupturing occurs, sperm cells enter the blood stream, where they were not naturally intended to be. As a matter of fact, nature makes a very specific point of keeping sperm cells out of the blood stream, because sperm cells have very strong enzymes on their surfaces and only half a DNA strand. What does the body think is happening? The immune system is sent on full alert to fight off a perceived infection, and the body becomes “autoimmune”, i.e. the body goes to war on itself. Again from Campbell’s Urology: “Vasectomy results in violation of the blood-testis barrier producing detectable levels of serum antisperm antibodies in 60 to 80 per cent of men….” Once this reaction starts, it is difficult to stop, even with a vasectomy reversal. It would have been good to know this also before it began happening in me.
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