As the UK reaches scorching temperatures, one expert has warned against wearing certain types of clothes, as they could trigger a hidden health issue
As Britain basks in the sun over the weekend, many will be opting for gym clothes in an attempt to stay cool.
The sweat-wicking and breathable properties of activewear make them an obvious choice as scorching temperatures reach 33C today, while heat alerts remain in place until Monday.
However, an expert has warned against reaching for tight workout gear, as it could trigger a hidden health issue.
Thrush is a common fungal infection that affects around 75 percent of women in the UK at least once in their lives. While it can occur at any time, the warmer months often bring a higher risk of infection.
To better understand why thrush is more common in summer and how to reduce the risk, Amie Anand, Pharmacist at Well Pharmacy Online Doctor, has offered expert insight and practical advice.
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“Thrush thrives in warm, damp conditions and can develop when the natural balance of bacteria and yeast in the vagina is disrupted,” explains Amie.
“During summer — especially when travelling or holidaying abroad — this balance is more easily upset due to increased sweating, frequent swimming, and the general rise in temperature.”
Amie advises wearing breathable clothing, choosing cotton underwear, and avoiding prolonged periods in wet swimwear to help prevent thrush during the warmer months.
Thrush is caused by an overgrowth of Candida, a type of yeast that naturally lives on the body. In summer, a combination of heat, moisture, and lifestyle changes can create the perfect environment for it to multiply.
Common symptoms of thrush
Early detection is key to treating thrush effectively. Typical symptoms include:
- Itching, burning, or irritation in the affected area
- A thick white discharge (often likened to cottage cheese)
- Redness and swelling
- Pain or discomfort during urination or sex (in vaginal thrush)
If left untreated, symptoms can worsen and cause ongoing discomfort.
6 common summer triggers for thrush
Increased heat and sweating
“High temperatures mean more sweating, especially in areas like the vagina, underarms, and beneath the breasts,” says Amie. “This excess moisture can create the perfect warm, damp environment for yeast to multiply. Opting for loose, breathable fabrics like cotton can help reduce this risk.”
Prolonged wet swimwear or sweaty clothes
“Long periods in damp swimwear or sweaty workout gear can trap moisture against the skin, disrupting the natural balance of bacteria and yeast. Candida thrives in warm, moist conditions, making it essential to change into dry clothing as soon as possible after swimming or exercise.”
Tight clothing and synthetic fabrics
“Wearing tight clothing, including non-breathable underwear, tights, or leggings, can trap heat and moisture against the skin, creating the ideal environment for yeast to thrive.
“Synthetic fabrics like polyester and nylon are particularly problematic, as they lack the breathability of natural fibres like cotton or bamboo. Opting for looser, more breathable fabrics can reduce this risk significantly.”
Hormonal fluctuations
“Heat isn’t the only factor – hormonal changes can also play a significant role. For some, hormonal shifts during the menstrual cycle or from birth control pills can increase the likelihood of thrush by altering the vaginal pH, making it more likely to develop thrush.”
Diet changes and high sugar intake
“Summer often brings BBQs, picnics, and sweet treats like ice creams, cocktails, and sugary drinks. High sugar levels can fuel yeast growth, as Candida feeds on sugar. Limiting sugar intake and incorporating probiotic-rich foods, like yoghurt and kefir, can help maintain a healthier pH balance.”
Travel and disrupted hygiene routines
“Travel or being away from home can disrupt routine hygiene practices, leading to more prolonged exposure to sweat or changes in pH levels from different water sources, personal care products, or unfamiliar bathroom conditions. Pack breathable underwear to stay fresh on the go.”
While thrush is common and treatable, preventing it in the first place is ideal — especially in the summer when conditions make infection more likely. By understanding the causes and taking a few simple precautions, you can enjoy the season comfortably and confidently.
If you suspect you have thrush or experience recurring symptoms, consult your pharmacist or GP for appropriate treatment.
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