Therefore, so that the
outlay for meat will not be greater than it should be and this food will
provide the greatest amount of nourishment, every housewife should be
thoroughly familiar with the place it occupies in the dietary.
2. In the first place, it should be remembered that the food eaten by
human beings comes from two sources--animal and vegetable. The foods of
animal origin, which include milk, eggs, and meat, have a certain
similarity that causes them to be classed together and this is the fact
that they are high-protein foods. Milk is the first protein food fed to
the young, but a little later it is partly replaced by eggs, and,
finally, or in adult life, meat largely takes the place of both. For
this reason, meat has considerable importance in the dietary. In
reality, from this food is obtained the greatest amount of protein that
the average person eats. However, it will be well to note that milk and
eggs, as well as cheese and even cereals and vegetables, can be made to
take the place of meat when the use of less of this food is deemed
advisable.
3. As the work of protein foods is to build and repair tissue, it is on
them that the human race largely depends. Of course, protein also yields
energy; but the amount is so small that if one variety of protein food,
such as meat, were eaten simply to supply energy to the body, huge
quantities of it would be needed to do the same work that a small amount
of less expensive food would accomplish.
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