FGF21 in Humans (IMAGE) Cell Press Caption This visual abstract depicts the findings of Søberg, Sandholt, and colleagues who link the hepatokine FGF21 to increased sweet consumption in humans, potentially by acting on the central reward system. Credit Søberg, et al./Cell Metabolism 2017 Usage Restrictions Credit Required. 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.