it's totally being dependent on fat for energy rather than carbohydrate?
yes that is right Jose. Your body actually shifts into a different metabolic state under ketosis, it is an evolutionary adaption of humankind from early in our development as a species. Back in the distant past (like caveman times) there would be periods of the year where there was little food other than nuts, the odd berry and meat that could be hunted.
Meat is high in fat and protein. So, at those times of the year the nomadic neolithic man would undergo the metabolic metamorphosis of ketosis. We can still do it today as modern humans, but it takes strict eating guidelines ;-)
To be honest m8, I don't know if the keto diet would be good for anemia. Might be worth looking into... it boosts energy and mental accuity... but only after an initial period of adaption where it makes you feel rotten. They call that first week to a month the keto flu lol
I've already been through the keto flu and it was not pleasant. I might write about that next.