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sellers. Welcome to Scientific Americans

Science Talk posted on September 16th, 2015. I'm Steve Mursky. On this episode, there was a loss

of tropical rainforest and the apes basically had to knuckle walk and they had to go on what we

call fallback foods where they were

eating tubers and it was a very tough time because fruits which contained fructose weren't available

that much and so the mutation would have provided a survival advantage that's richard johnson

he's a professor of medicine at the university of color Anshutes Medical Campus in Aurora, Colorado,

specializing in the study of the underlying causes of diabetes, obesity, hypertension, and kidney disease.

And he and University College London anthropologist Peter Andrews are the co-authors of an article

Hot Off the Press presses in the October

Scientific American titled The Fat Gene.

And the subtitle really spells it out, a genetic mutation in prehistoric apes may

underlie today's pandemic of obesity and diabetes.

I spoke to Richard Johnson by phone.

So I remember, I think I started reading about thrifty genes, fat genes, maybe going back to the 70s in the popular literature, talking about specifically the obesity and diabetes epidemic among Native Americans in the U.S. Southwest.

And it appears that the idea of the fat gene, the thrifty gene, has gone in and out of fashion,

and now you think you've really hit on

...