Tone Bjorge (IMAGE) The University of Bergen Caption Professor Tone Bjorge is first author of the study on obesity and risk of cancer. Credit Kim E. Andreassen, University of Bergen. Usage Restrictions None 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.