According to a study, you should throw away your underwear after it's a year old. Apparently, it doesn't matter how often you launder it after a year, it can still be full of bacteria that can cause things like E coli, etc.  The last place you want these infections is down around the family jewels. The study also found that 18.5 percent of men and 10 percent of women regularly wore their underwear multiple days between washings. The study also suggested you sleep nude as opposed to wearing underwear to bed. For the complete story click below.

(Daily Mail)