The China Study also involves a large population of people who have historically had a calorically restricted diet. There are simply too many broad variables i

The China Study also involves a large population of people who have historically had a calorically restricted diet. There are simply too many broad variables in culture, history and genetics for the China study's claims to be valid. You can't compare two types of diets when one group is heterogenous and the other group is homogenous, and if both were homogenous or both were heterogenous, you'd have to draw subjects from the same population.