>Another way to say this is that what we eat doesn’t matter; it’s only how much The big, glaring, obvious problem with this is "how much you eat is the only th

>Another way to say this is that what we eat doesn’t matter; it’s only how much The big, glaring, obvious problem with this is "how much you eat is the only thing that determines weight gain/loss" doesn't imply that what you eat doesn't matter. What you eat can easily change how much you eat; it's much easier to consume a giant pile of calories if it's a cake than if it's spinach.