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A disturbing survey shows that almost 50% of people do not change their underwear every day.

Research by underwear manufacturer Tommy John shows that 45% of people wear the same underwear for two days or more.

To make matters worse, 13% of respondents admitted that they wore the same underwear for 7 days or more.

Men are the most serious criminals, and they are 2.5 times more likely to wear pants for a week than women.

But in general, the situation of women is not much better.

A Tommy John representative-who conducted a survey of 1,000 Americans-told MailOnline: "These results are fairly even between men and women, which would bring any theory that women pay more attention to hygiene than men, and vice versa. Forget about it."

The study also revealed that people rarely buy new underwear, with 46% admitting that they have owned an underwear for a year or more.

38% admit that they don't know how long they have owned certain works.

Tommy John recommends changing underwear every six months to a year because it accumulates microorganisms and fungi.

This can lead to yeast infections or urinary tract infections.

"Women should be especially careful because they are more likely to have health problems due to uncleanliness than men," the spokesperson continued.