Human nutrition cannot be made a science under the conventional methods of omnivorous eating - eating anything and everything without thought or reason. Nutrition can only be made a science by limiting the articles of food to such things as will reproduce all the chemical elements of the human body, mentioned at the beginning of this lesson.

"Ease" and "disease".

The further we remove foods from their natural state, the more difficult becomes their analysis, their reliability, and a knowledge of their chemistry, therefore the menus that appear in this work include only the foods that will give to the body the best elements of nutrition. There is but little difficulty in ascertaining the chemistry of natural foods, but when they have been preserved, pickled, canned, smoked, evaporated, milled, roasted, toasted, oiled, boiled, baked, mixed, flavored, sweetened, salted, soured and put into the popular commercial forms, it becomes very difficult, if not impossible, to know what we are eating, or to estimate the results.

Prepared foods unscientific.

Man is the net product of what he eats and drinks. Food bears very much the same relation to him that soil does to vegetation. The following questions, therefore, should be solved by every one who believes that success and happiness depend upon health and vitality:

1 How to select and how to combine foods which will give to the body a natural result, which is health

2 How to select and how to combine foods so that they will counteract and remove the causes of disease

3 How to select foods which contain all the chemical elements of the body, and how to combine and proportion them at each meal so that they will chemically harmonize give to the body all the nourishment it is capable of assimilating

4 How to determine the quantity of food to be taken each day, or at each meal, that will.

Note: Too much food, even of the right kind, defeats this purpose and produces just the opposite result.

Upon this knowledge hinges the building of a natural body, the cure of a vast majority of diseases, our ability to reach the highest state of physical and mental vitality, the prolongation of youth and longevity.