It might seem like a simple part of a daily hygiene routine, but not everyone is changing their underwear every day. Health professionals are now raising concerns, warning that wearing unclean undergarments for extended periods can lead to more than just discomfort—it may increase the risk of infections and other health issues.
According to research from 2021, an average pair of worn underwear can contain around 0.1 grams of fecal matter. While that number may sound small, experts emphasize that wearing the same pair for longer than 24 hours can expose the body to unwanted bacteria and potential health complications.
A surprising trend among younger adults
Despite clear hygiene recommendations, many people—especially younger adults—are not following the daily change rule. A 2023 survey found that 36% of individuals aged 18 to 24 admitted to wearing the same underwear for more than a day, while another 14% reported doing so regularly. In total, about half of respondents in this age group said they extend wear beyond a single day.
This habit isn’t limited to Gen Z. Around 24% of adults aged 25 to 34 also reported reusing underwear without washing it in between. Meanwhile, older adults tend to maintain better hygiene practices, with the majority saying they change their underwear daily.
Why it matters for your health
Medical experts stress that rewearing underwear can create an environment where bacteria, yeast, and moisture thrive. Tight-fitting clothing combined with limited airflow can lead to skin irritation and increase the likelihood of infections.
Repeated use without washing may contribute to issues like rashes, itching, and flare-ups of existing skin conditions such as eczema or psoriasis. The friction from worn fabric, combined with trapped moisture, can further aggravate sensitive areas.
Increased risk of infections
Wearing the same underwear too long can also raise the risk of common infections. Yeast infections, caused by an overgrowth of fungi, often lead to itching, irritation, and discharge. Another condition, bacterial vaginosis, results from an imbalance of bacteria and may produce a noticeable odor and unusual discharge.
Because certain areas of the body naturally retain more moisture, they can become breeding grounds for bacteria if proper hygiene is not maintained.
Men aren’t exempt
Although much of the focus is often on women’s health, men are equally at risk. One common issue is jock itch—a fungal infection that causes redness, itching, and discomfort in the groin and surrounding areas.
Even looser underwear styles, like boxers, don’t eliminate the risk. If worn repeatedly without washing, they can still harbor bacteria and moisture that contribute to skin problems.
Best practices for hygiene
Health professionals recommend changing underwear at least once every 24 hours to maintain proper hygiene and reduce the risk of irritation or infection. In situations involving heavy sweating—such as workouts or hot weather—changing more frequently is strongly advised.
If you notice symptoms like itching, discomfort, or unusual discharge, it’s important to switch to clean underwear immediately and seek medical advice if needed.
The bottom line
Daily underwear changes may seem like a small habit, but they play a significant role in overall health and hygiene. Keeping this routine consistent can help prevent unnecessary discomfort and reduce the risk of common infections.
How often do you refresh your daily essentials? Small habits can make a big difference when it comes to personal health.