Every year, 5 million Americans have their wisdom teeth removed. These pesky molars can cause infections tooth decay, and even tumors. The problem? Wisdom teeth often can’t fit in our mouths. But that wasn’t always the case. Early human ancestors used these teeth to grind up tough, uncooked food.

------------------------------------------------------

#WisdomTeeth #ToothDecay

Science Insider tells you all you need to know about science: space, medicine, biotech, physiology, and more.

Subscribe to our channel and visit us at: http://www.businessinsider.com/science
Science Insider on Facebook: https://www.facebook.com/BusinessInsiderScience/
Science Insider on Instagram: https://www.instagram.com/science_insider/
Business Insider on Twitter: https://twitter.com/businessinsider
Tech Insider on Twitter: https://twitter.com/techinsider

Why Do Wisdom Teeth Suck?

------------------------------------------------------

Following is a transcript of the video: