why would you go through all this effort to eliminate variables with identical twins and then not also control caloric intake between the different diets? they fed these people fixed meal plans for 4 weeks, of course the group consuming fewer calories are going to lose more weight etc.

[–] canihasaccount@lemmy.world 0 points 3 days ago (1 children)

Try eating the same number of calories on a vegan diet. It's hard. More fiber fills you quicker. The diets can't equate both satiety and calories. Lower calories on a vegan diet is a feature, not a bug.

[–] acosmichippo@lemmy.world 3 points 3 days ago* (last edited 3 days ago)

Nonsense, plenty of vegan foods high in carbs, sugar, and fats are more calorie dense than lean protein.

Anyway increasing calories in a vegan diet isn't the only option available. they also could have reduced the calories in the omnivore diet by reducing carbs and fats, increasing fiber, etc. they gave the omnivore twins a larger calorie intake for no reason.