Human Chins Didn’t Develop From Chewing, Finds Study

Human Chins Didn’t Develop From Chewing, Finds Study


A new study states that human chins did not develop because of mechanical forces like chewing, but an evolutionary adaptation related to face size and shape led to its development.

The study, which was conducted by the researchers from the University of Iowa, and published in the Journal of Anatomy, states that the emergence of the chin has more to do with our social skills than it does to the way we eat. The researchers believe that because our faces are now smaller, the jawbone has become more prominent.

Dr. Nathan Holton, assistant Professor at University of Iowa, and the lead author of the study, said, “In some way, it seems trivial, but a reason why chins are so interesting is we’re the only ones who have them. It’s unique to us.”

For their study, the researchers used advanced facial and cranial biomechanical analyses of nearly 40 people whose measurements were plotted from toddler to adults. From this data, the researchers were able to conclude that the emergence of the chin was unconnected to the way that modern man chewed his food. According to the researchers, the mechanical forces needed to chew are incapable of producing the resistance needed for new bone to be created in the jaw area.

“In short, we do not find any evidence that chins are tied to mechanical function and in some cases we find that chins are worse at resisting mechanical forces as we grow. Overall, this suggests that chins are unlikely related to the need to dissipate stresses and strains and that other explanations are more likely to be correct,” added Holton.

The researchers believe that chin’s emergence in modern humans arose from simple geometry. As our faces became smaller in our evolution from archaic humans to today, the chin became a bony prominence. The researchers added that our faces are roughly 15% shorter than Neanderthals’.

Previous articleZombie Worms Are 100 Million Years Old And Feasted On Ancient Reptiles
Next articleFemale Chimpanzees In Fongoli Use Tools To Hunt

Brian Thompson has been a science journalist since past 15 years and continues his journey with the Astronomy, Space and Social Science changes happened so far in this industry. He has worked for various magazines as the chief editor. He has experience in writing and editing across every sector of the media involving magazines, newspapers, online as well as for leading television shows for the past 15 years. His style of presentation is both crisp yet captivating for the audience. Email :