After over 30 years as a urologist, I’ve seen the same mistakes wreck men’s health over and over.

Here are five things I would never do, and neither should you.

1. Don’t stick things where they don’t belong

Sounds obvious, but you’d be surprised.

Foreign objects in the urethra or rectum can cause infections, bleeding, and permanent damage.

I’ve seen everything from pens to wires to household items.