The next time you blow out the candles on a birthday cake, you may want to wish for a strong immune system.

A study published in the Journal of Food Research found that blowing out birthday cake candles left behind 1400 percent more bacteria on the cake's frosting than if candles were not blown out on the cake.

The study suggests that those with health concerns may want to take safety measures when engaging in the birthday cake tradition.

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Demonstrators protest ICE raids and deportations on Buford Highway in Atlanta on Tuesday, June 10, 2025. (Arvin Temkar/AJC)

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