Hormone FGF21 found to influence brain’s food reward system in response to protein restriction

When faced with multiple food options and ultimately choosing one, the factors of that decision-making process may be more physiological than previously assumed. A group of scientists led by Pennington Biomedical Research Center’s Dr. Christopher Morrison has discovered that the hormone fibroblast growth factor 21 (FGF21) plays an influential role in brain reward mechanisms like those involved in dietary choices.