I've been doing vasectomies for years, and there's one myth I still hear constantly:
"A vasectomy will mess with my testosterone."
It won't. Let me explain why—and why this myth refuses to die.
Here's What Actually Happens
A vasectomy blocks the tubes that carry sperm from your testicles. That's it.
Your testicles still produce testosterone exactly the same way they did before. The hormone goes straight into your bloodstream—it never traveled through those tubes in the first place.
Think of it like this: cutting a garden hose doesn't affect the water pressure in your house. Different systems entirely.
So Why Do People Keep Believing It?
Because timing and correlation get confused with cause and effect.
Most men get vasectomies in their 30s or 40s—the exact same time testosterone naturally starts declining. About 1-2% per year after age 30.
So if you get a vasectomy at 38 and notice lower energy at 42, it's easy to blame the procedure. But that would've happened anyway.