When presented with a special cake on our birthdays, it’s an automatic reaction for us to blow out the candles and make a wish.
You’ve likely followed the tradition since you were a kid, but the fact that it may spread germs probably hasn’t crossed your mind. If you think of yourself as a germaphobe, though, you might be a little grossed out to learn what researchers at Clemson University just found in their new study.
After spreading icing over foil and poking candles through to a Styrofoam base, researchers asked test subjects to eat pizza — as the food is popular at birthday parties — and then blow out the lit candles.
When they tested the samples for contamination, they found that blowing on the candles increased the bacteria on the icing by as much as 1,400 percent.