Alaska Blueberries (IMAGE) University of Alaska Fairbanks Caption University of Alaska Fairbanks research has tied chemical signatures in human hair to the consumption of traditional Yup'ik foods such as these blueberries, as well as fish and marine mammals. Credit Photo courtesy of the UA Museum of the North Usage Restrictions Credit UA Museum of the North 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.