[creamyhorror]

His statement was on a per-gram basis, which seems pretty much obviously true (since it basically says that fat is more energy-dense than carbs).

Nonetheless, like jcheng I'm interested in what you've learned from your research. I've also been looking into low-carb/ketogenic diets, and a friend does intermittent fasting (IF), and there are a host of clashing opinions and studies of varying quality on everything. Taubes, Lustig, Aragorn...my conclusion is that we still know very little about the effects of diet composition.

I've switched mostly to sugar substitutes and reduced my carb intake because it seems like something most would agree upon. My IFing friend claims IF/caloric restriction is one of the few things actually shown to significantly prolong lifespans in animals. Do you have any knowledge of these things, or of better-done studies I should be reading? Thanks.

edit: I've just been reading Guyenet and what he says is quite interesting

[psykotic]

> His statement was on a per-gram basis, which seems pretty much obviously true

Ah, I missed that. But that's not very a useful comparion. The useful thing to do is comparing calorically matched portions of fat-based and carb-based foods for satiety and fullness.