If you don’t wash your bed sheet once a week then your bed would turn into a “botanical park” of bacteria and fungus, according to Philip Tierno, a microbiologist at New York University.

The microscopic life within the folds of our bed can make us sick if we left the sheets unwashed.

For that matter, a study in ‘the Journal of Allergy and Clinical Immunology’ was published on 30th November that conducted tests of thousands of American homes and researchers found out that 90% of them had at least three detectable allergens.

These allergens cause you sniffing and sneezing, “Even if you don’t have allergies per se, you can have an allergic response,” Tierno said.

Another reason why the allergens lurk into our beds is just that by sleeping on our beds, we’re keeping them moist and warm. And not changing the sheets more often increases the chance of more allergens within folds of our beds. ‘Humans naturally produce some 26 gallons of sweat between our sheets every year’ Business Insider wrote. When it’s hot and humid, our moist turns into “ideal fungal culture medium”. Even our pillows can have 16 species of fungus during hot summer days.

“In addition to the fungi and bacteria that come from human sources (including sweat, sputum, and anal excretions), beds also teem with foreign microbes like animal dander, pollen, soil, lint, dust mite debris, and feces. They can also contain remnants of the finishing agents used to produce sheets,” Business Insider wrote.

“If you touched dog poo in the street, you’d want to wash your hands,” Tierno said. “Consider that analogous to your bedding. If you saw what was there — but of course you don’t see it — after a while, you have to say to yourself, ‘Do I want to sleep in that?'”

So don’t make your bed the hub of allergens and wash your sheets every once a week!

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