this https://www.pnas.org/doi/full/10.1073/pnas.222658699
and this https://onlinelibrary.wiley.com/doi/am-pdf/10.1002/eat.22531
among many others...
https://scholar.google.com/scholar?hl=en&as_sdt=7%2C39&q=ser...
A key point is that the same anomalies are seen in anorexia, binge eating and bulimia.