Your pillowcase has more bacteria than your toilet seat if you don't wash your sheets often
May 30th, 2019
Gina Echevarria and Benji Jones
Each night, your body sheds around 15 million skin cells, which build up if you don't wash your sheets often. You're essentially providing food for thousands of dust mites.
This is bad news for the some 20 million Americans who are allergic to proteins produced by dust mites and their feces.
If you never wash your sheets, fungi and bacteria build up, too. In fact, one study found that your pillowcase has more bacteria than your toilet seat.
Experts recommend washing your sheets once a week with the hottest water possible.