Blowing out candles on birthday cakes boost frosting bacteria by 1400%

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We've all heard the jokes when it's time to blow out the candles on our birthday cakes.

According to a recent study, blowing out the candles on your birthday cake can increase the number of bacteria on the cake by 1,400% No, that's not a typo.

Researchers slathered icing on two fake birthday cakes. Then, they compared the levels of bacteria between cakes with candles that were blown out and cakes with candles that weren't.

The frosting on the cakes with candles had way more bacteria than the other cakes.

Researchers from Clemson University in SC conducted the study, testing the cake's frosting for bacteria growth, according to the Independent. Therefore, they made a decision to simulate a party environment and see what happens when one blew his birthday candles. "We thought it might help the salivary glands get going".

"On average, blowing out the candles increased the amount of bacteria on the frosting by 14 times".

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And in one awful case, the number of bacteria increased more than 120 times - suggesting that some of us transfer more germs than others.

Mouths are full of bacteria, but the good news is, most are not harmful. He added that it would be common sense to avoid a slice from a cake on which a clearly sick person had blow on to.

"It's not a big health concern in my perspective", Paul Dawson, study co-author and professor of food safety at Clemson University, told The Atlantic.

"In reality if you did this 100,000 times, then the chance of getting sick would probably be very minimal", he added.

But while that might gross you out enough to put you off cake for life, the researchers say the majority of the bacteria is harmless.