science

Sure, but keto says it totally fine to eat a steak and a stick of butter and nothing else. That doesn't seem sustainable.

Also I've never met anyone that does keto that allows any carbs. I'm glad that apparently that's not the only way though.

To be clear, I do not care if all you eat is steaks and butter. Not my business. Just trying to offer insight into the down votes. I don't think it's the IF crew doing it. It's probably people who are anti-keto.