If you’re in a habit of not changing your undies every day, turns out, you’re not alone.

A disturbing survey has found that almost 50 per cent of Americans don’t trouble themselves with changing their underwear every day.

The survey, carried out by underwear manufacturer Tommy John, included 1,000 people from the US.

Surprisingly, 45 per cent of the participants admitted having worn their undies and briefs for two days or more.

As if that’s not disgusting enough, 13 per cent of the surveyed people revealed that they have kept wearing their undies for an entire week or longer.

Comparing the results of men and women, the male participants were found to be at the worse end of the spectrum.

Men were 2.5 times more likely than their female counterparts to sport their underpants for seven days or even longer durations.

Interestingly, women also didn’t do great, when it came to overall results.

Speaking to MailOnline, a spokesperson for Tommy John said: “These results were split fairly evenly between men and women, which throws any theories out the window that women are more hygiene-conscious than men, or vice versa.”

The survey also highlighted another disturbing fact: people rarely invest in buying new underwear for themselves.

Out of 1,000 participants, a whopping 46 per cent said they were using a set of briefs for one year or longer. Another 38 per cent confessed that they didn’t know how long they had possessed their undergarments.

Tommy John suggests changing your undies every year, preferably every six months, because they can accumulate hazardous microorganisms and fungi over time.

It can cause a yeast infection or urinary tract infection in both males and females.

Speaking of the health risks associated with wearing unclean undies, the spokesperson for Tommy John said: “Women should be especially careful, as they’re more at risk than men to experience health issues due to unclean underwear.”