TNFSF14 and Genetic obesity: Previously published papers have reported an increase in circulating LIGHT levels in obese adults as well as in children [5,6], Prader Willi syndrome subjects displaying genetic obesity [7,8], and mice subjected to High Fat Diet (HFD composition: 19 MJ kg−1, 35% of energy from carbohydrate, 42% from fat, 23% from protein) [9].