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The Evolutionary Reason Humans Brush Their Teeth

Jan 15, 2015
Most youngsters have an aversion to brushing their teeth, but a beautiful smile can brighten up a dull day and the best way to take care of that smile is by brushing twice a day. With all that swishing and spitting going on, it's easy to start wondering why brushing is so important, which leads to some interesting speculation about what would happen if we all just stopped brushing entirely. Cavemen didn't brush, so why should we? After all, not all of our ancestors died from gingivitis.

If we explore why we brush our teeth from an evolutionary perspective, there are a few reasons why modern humans have to brush to stay healthy, even though our primate cousins didn't. Grab your floss and find the answers in this video by the SciShow.
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