Different sources of protein have varied bioavailability levels. Protein from corn gluten meal, for example, isless bioavailablethan protein from poultry by-product. When cat food manufacturers load up their foods with plant protein as a cost-effective alternative to meat, they boost protein percentag...
So what is the traditional diet of this group, remarkable for both longevity and healthy aging? Here were the major sources of their calories in 1949: FOOD % OF TOTAL CALORIES Sweet potatoes 69% Other vegetables 3% Rice 12% Other grains 7% Legumes 6% Oils 2% Fish 1% The following foods ...