According to a new study, you should throw away your underwear every YEAR . . . or it becomes a health risk.
Even though you're washing them after you wear them . . . hopefully . . . old underwear can still develop a buildup of bacteria like E. coli. That can lead to you getting infections down there. And NO ONE wants those infections.
Here's the really crazy part of this story:
Not everyone is washing their regularly. SERIOUSLY?? The study found 18% of men and 10.5% of women wear underwear multiple times without washing them.
And one more thing: The researchers also say you probably shouldn't wear underwear when you SLEEP . . . nude is better.