2. The 5 Second Rule
Listener Quinn wonders whether the 5 second rule really exists and is it really ever safe to eat food off the floor.
Would you eat food that fell on the floor? Thatβs the question Hannah and Dara are getting their teeth into this week as they put the so-called β5 second ruleβ through its paces.
For some people itβs 3 seconds, and for others its 10 β especially if it involves a dropped ice cream and a screaming child. But microbiologist Don Schaffner says thereβs no safe amount of time to leave food on the floor if youβre planning to eat it. And while you might think buttered toast would pick up the biggest number of bugs, it may surprise you to hear that wet foods like watermelon are actually the worst when it comes to attracting harmful bacteria.
If all this is putting you off your dinner, the bad news is that the rest of your kitchen is also a microbiological minefield. Research shows nearly 70% of us keep our fridges are the wrong temperature, which sparks a lively discussion about whether itβs ever safe to reheat rice.
For home hygiene guru Sally Bloomfield itβs all a question of being a bit more clever about the kind of germs we expose ourselves to and weighing up risks.
Contributors:
Dr Don Schaffner: Rutgers University
Dr Ellen Evans: Cardiff Metropolitan University
Professor Sally Bloomfield: International Scientific Forum on ΒιΆΉΤΌΕΔ Hygiene
Producer: Marijke Peters
Executive Producer: Alexandra Feachem
A ΒιΆΉΤΌΕΔ Studios Audio Production
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Curious Cases
Hannah Fry and Dara Γ Briain tackle listeners' conundrums with the power of science!