Adventurous Eating Helped Human Ancestors Boost Odds Of Survival | WAMU 88.5 - American University Radio

NPR : News

Filed Under:

Adventurous Eating Helped Human Ancestors Boost Odds Of Survival

Picture, if you can, a prehistoric Bobby Flay — an inventive 3 million-year-old version of the Food Network star chef. He's struggling to liven up yet another salad of herbs and twigs when inspiration strikes. "We've got grass here, and sedge," he says. "Grass and sedge, that's what this dish needs!"

His pals take a tentative taste of this nouvelle cuisine. Sedges usually aren't considered gourmet fare, after all, by these human ancestors. They're tough grasslike plants that grow in marshes. But wow! Not only is this a new taste sensation, it's found in many places.

This kind of discovery of new foods may have upped the odds of survival for human ancestors, archeologists say in a new paper.

Archaeologists are intensely interested in what those ancestors ate, and how changes in the diet may have influenced how we became humans.

By analyzing the carbon in fossil teeth of Australopithecus bahrelghazi, a hominin that lived about 3 million years ago in what is now Chad, scientists were able to figure out that they ate grasses and sedge, not the bush-and-herb diet typical of early primates, or today's great apes.

It's progress, but was it tasty? Probably not, says Julia Lee-Thorp. "Bleah. That's about the right response." They also weren't very nutritious, adds Lee-Thorp, a professor of archeology at the University of Oxford in England, who led the new research. Her report is published in the Proceedings of the National Academy of Sciences.

That hasn't discouraged fans of the paleo diet, who argue that eating these so-called C4 plants — corn and grasses that typically grow in warmer savanna climates and are named for the type of carbon isotope used to identify them in fossils — are a lot healthier than plants that make the C3 form of carbon. C3 plants include beans, rice, and potatoes.

Broadening their diet to include a variety of plants may have made it more likely that these early primates could expand into new territory. "It's possible that they were driven" to eat new foods, Lee-Thorp tells The Salt. "But it's more likely that this was a new niche, a new opportunity that arose. "

So dietary adventures could have led early human ancestors on the first steps of migrations through Africa and beyond.

Copyright 2012 National Public Radio. To see more, visit http://www.npr.org/.

NPR

When Islamists Impose Their Will In 'Timbuktu,' One Family Resists

The movie, one of five Academy Award nominees for best foreign language film this year, is about radical Islamists occupying the city in Mali. Remarkably, it's often on the verge of being a comedy.
NPR

Multivitamins: The Case For Taking One A Day

Multivitamins have gotten a bad rap. But studies suggest these dietary supplements may help plug the nutrition gaps resulting from our less-than-ideal eating habits.
NPR

Mitt Romney Won't Run For President In 2016

"I've decided it is best to give other leaders in the party the opportunity to become our next nominee," Romney said in a statement to supporters, according to multiple news reports.
NPR

Media Outlets Partner With Snapchat To Appeal To Younger Users

As people disappear from the audiences of conventional news organizations, 11 media outlets have partnered with Snapchat in the U.S. to offer its younger users easily digested fare within the app.

Leave a Comment

Help keep the conversation civil. Please refer to our Terms of Use and Code of Conduct before posting your comments.