By LUKE BLACKALL
London - If you're reading this while eating and you happened to drop your food on the floor, you might want to stop (eating, that is, not reading).
A BBC investigation has proved that the five-second rule, followed so slavishly by so many of us, is not only hokum, but also potentially dangerous.
For those not familiar with it, the five-second rule states that one is allowed to eat something that has dropped on the floor, provided that it has stayed there for no longer than five seconds (and has been given “a bit of a wipe” afterwards).
It might sound a bit dodgy when spelled out, but in homes up and down the land (where it is sometimes reduced to a mere three seconds) it is held as a quasi-scientific fact, self-justification that greed is more important than health risks and a reminder not to be fussy.
To test the theory, the Beeb sent reporter Sophie van Brugen to meet Dr Ronald Cutler at his laboratory in the school of biological and chemical sciences at Queen Mary, University of London. Pizza, toast (butter side down) and an apple that were dropped on a kitchen floor, a carpet and a street, respectively, were taken to the lab for testing. A day later, all three items showed themselves to be covered in bacteria. Even the pizza that ended up on the kitchen floor had evidence of “faecal bacteria” on it.
It's not the first examination of its kind. In 2004 a study by a American student, Jillian Clarke, at the University of Illinois, won the year's Ig Nobel prize (a sort of satire on the real Nobels) in the field of Public Health. And in 2007, a team from Clemson University in South Carolina published its findings on the prevalence of bacteria found on food dropped on the floor in the Journal of Applied Microbiology.
While the evidence is unlikely to phase the old-matronly types who are fond of bleating lines such as “a little bit of dirt is good for you”, it could make those who pick up food thrown from children's plates to the floor and give it back to them think twice about doing so. And it should also disavow people of the notion that bacteria somehow respect superstition. - The Independent
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