A reader asks: Should I go for a vasectomy?

If you have doubts, skip the snip.

Although reversal is an option, it’s not always effective; success rates can be as low as 80%, says Dr Robert Brannigan, a professor of urology 
at Northwestern University. Ready to forgo fatherhood? Here’s what’ll happen, in a nutshell: the doc administers a local anaesthetic and makes a small incision in your scrotum to cut your vas deferens, the tubes that push sperm into your urethra. Then he ties off loose ends and sews you up. Most guys can have sex and work out within a week.

To avoid complications, pick a urologist who does at least one 
vasectomy a week, says Brannigan.