Cotton-seed Oil is often substituted or mixed with the cheaper grades of olive oil. It is wholesome, if fresh, but has not the pleasing flavor of the olive.
Nut Oils are good, but, with the exception of peanut butter, are not often used. English walnuts, hickory nuts, pecans, cocoanuts, and Brazil nuts contain much oil. Nut oils are not well borne by some, hence nuts must be sparingly used by them. If taken they should be used with salt, and be thoroughly masticated.
Almond oil and olive oil are used in cooking, to some extent.
To summarize—digested sugar is called dextrose or glucose; digested starch becomes first dextrin, then maltose (animal sugar); digested protein is peptone; and digested fat is saponified fat.
WATER
No food element is more important for the needs of the body than water. It is composed of oxygen and hydrogen. It forms the large part of the blood and lymph.
The body will subsist for weeks on the food stored in its tissues; it will even consume the tissues themselves, but it would soon burn itself up without water, and the thirst after a few days without it almost drives one insane.
Though it produces force only indirectly, it is entitled to be classed as a food, because it composes about two-thirds of the weight of the body and a large part of all the tissues and secretions. Yeo estimates that the supply of water to the body should be averaged at half an ounce for each pound of body weight.
It has been estimated that from four to five pints of water are excreted each day by the body and therefore a similar amount should be consumed daily. The average individual at normal exercise, requires about seventy one and one half ounces of water daily, which equals about nine glasses (one glass of water weighs one-half pound). Some of this may be obtained from the food.