If you can’t remember the last time you washed your bed sheets, listen up.
A leading microbiologist in New York has urged people to wash their duvet covers, pillow cases at least once a week to avoid illness.
Philip Tierno, from New York University, told Business Insider that microscopic life can build up over time within bed clothes and, eventually, make people sick.
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http://www.huffingtonpost.co.uk/entry/how-often-you-should-be-washing-your-bedsheets_uk_595b5d8de4b05c37bb7ff980