The food pyramid is a lie, fat is good for you, and many (if not most) health problems are treatable with diet alone. I'm in remission from severe arthritis (multiple joints replaced), chronic fatigue, depression and a plethora of other symptoms from changing how I eat. This blog chronicles how my family and my parents eat and what it's done for us.
I think fat intake, in nature, is actually a function of altitude. Divers have seizures from oxygen toxicity but being in ketosis makes them 20 times more resistant to oxidative damage. On the other hand, mitochondria can be damaged by low oxygen state if it is still utilizing fatty acid metabolism. It’s like carbon monoxide poisoning of the cell. Meldonium is an eastern European diabetes medication that inhibits carnitine synthesis to force the body ‘out’ of ketosis quicker when oxygen levels are low to prevent metabolic damage.
Therefore, low oxygen seems to be the trigger for switching to glycogen from ketones. They seem to know quite a lot about about this metabolic switch in Eastern Europe. And the lower the altitude, the more fat you find in food (i.e. fish) whereas the higher the altitude, the less fat you find in food (i.e. deer or mountain goat).
Sucrose intake, in nature, seems to be a function of sunlight exposure. I’m still working on this theory though.