Fad diets a la Taubes's poorly researched book are not very popular in lab settings, where calories in/out work tends to make quantification easier. And given

Fad diets a la Taubes's poorly researched book are not very popular in lab settings, where calories in/out work tends to make quantification easier. And given the low cost and overhead of fresher food, many research animals I've been involved with in a past life are pretty well compared to th humans overseeing them.