Why our ancestors had straight teeth without braces

Small jaws mean big problems for modern humans. Modern diets gave us smaller jaws--and a lifetime of orthodontic problems. Breakthroughs, discoveries, and DIY tips sent six days a week. Every year, millions of children and teens undergo a common ritual of growing up: getting braces. And it's not just young folks who turn to metal brackets to handle some common dental issues--the Cleveland Clinic estimates that some 20% of new orthodontic patients are over the age of 18 .