Dr. Oz on Men's Health
Vasectomies are incredibly safe and actually don't block ejaculation at all and won't cause impotence, Dr. Oz says. Instead, the procedure prevents your body from adding sperm to your semen, making it sterile.
The only danger, Dr. Oz says, is "sometimes you get a little soreness from the vasectomy because they go up through the scrotum to cut it. … However, you've got to make sure your sperm count has dropped after the operation before resuming relations."