John,

You might look into some naturopathic concepts.  Greens are the only
healing, rejuvenating foods I know of.  I don't know about pemmican.
Fruits are considered cleansing foods, but not building foods.

One thing I am wondering about with high fat diets is whether it will
cause a reduction in the body's oxygen.  When I eat higher amounts of
fats than normal I end up having to do deep breathing.  Mary J.