Turkana women carry water (IMAGE) Princeton University Caption A new study led by Princeton's Julien Ayroles and Mpala's Dino Martins supports the "mismatch" hypothesis. They found that obesity, diabetes and cardiovascular illnesses increased among Turkana people whose diet changed from animal-based to carbohydrate-based. Here, Turkana women carry water back to their dwelling, in northern Turkana. Credit Kennedy Saitoti, Mpala Research Centre Usage Restrictions Editorial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.