A similar parallel between function and dietary properties can be drawn in the case of the highly specialized muscle tissue on the one hand and the actively metabolizing glandular tissues on the other. The muscle tissue has dietary properties almost identical with the seed, tuber or root in all respects except its richness in protein. It lacks sufficient calcium, sodium and chlorine, fatsoluble A, watersoluble B, and watersoluble C. The glandular organs such as the liver and kidney are much more nearly complete foods. Indeed, they have all the complexes which are essential for the construction of living tissue, and when supplemented with a carbohydrate, such as starch, approximate much more nearly a complete food than would a similar amount of muscle tissue with starch.
British Food Journal – Emerald Publishing
Published: Jun 1, 1920