Medical Research Council - London Institute of Medical Sciences

Now in our 9th year of bringing you beautiful imagery from biomedical science every day

Sweet Tooth

Tooth decay - even a problem for hominids now long extinct

10 September 2018

Sweet Tooth

You might think that tooth decay is a modern problem caused by munching on too many sweets, but here’s some evidence showing that dental problems resulting from sugary snacks go back much further. These fossilised molars come from a human-like ape called Dryopithecus carinthiacus, which lived around 12.5 million years ago in an area that’s now part of Austria. The tooth on the right is pretty healthy, but the one on the left has a large hole. This is the oldest known example of tooth decay caused by sugars in the diet, known as dental caries. These holes are typically seen in people who eat a lot of sugar – much more than the amounts found in the diets of modern chimpanzees – so it seems likely that these ancient creatures had a sweet tooth and year-round access to sugar-rich fruits and honey gathered from the lush forests in which they lived.

Written by Kat Arney

Search The Archive

Submit An Image

What is BPoD?

BPoD stands for Biomedical Picture of the Day. Managed by the MRC London Institute of Medical Sciences the website aims to engage everyone, young and old, in the wonders of biomedicine. Images are kindly provided for inclusion on this website through the generosity of scientists across the globe.

Read More

BPoD is also available in Catalan at with translations by the University of Valencia.