It seems that all of us ought to know how to eat, for we have much practice; yet the individuals who know the true principles of nourishing the body are comparatively few. Very few healers are able to give full and explicit directions on this important subject. Some can give partial instructions, but we need a full working knowledge.

In one period of our racial history there were times when it was difficult to obtain food, as it is now among some savage people. Then it was without doubt customary to gorge, as it is among some savages now when they get a plenteous supply of food, especially of flesh food. Even among so-called civilized people, the distribution of food is so uneven that some are in want somewhere, nearly all the time. In parts of Russia, we are informed, the peasants go into a state of semi-hibernation during part of the winter, living on very small quantities of inferior food.

With rapid transportation and the extensive use of power-propelled machinery, famine should be unheard of in civilized countries. In our land there is a sufficient quantity of food and people seldom suffer because they have not enough, but considerable suffering is due to excessive intake and to poor quality of food. Weight for weight, white bread is not as valuable as whole wheat bread, though it contains as much starch. Measure for measure, boiled milk is inferior as a food to untreated milk, either fresh or clabbered. Such facts make it necessary for us to know how to eat.

The correct principles of taking nourishment to the best advantage have been fairly well known for a long time, and perhaps they have been fully discussed years ago by some author, but so far as I know Dr. E. H. Dewey is the first one who grouped them and gave them the prominence they deserve. He employed many pages in explaining clearly and forcibly these principles, which can be briefly stated as follows:

First, Be guided by the appetite in eating. Eat only when there is hunger.

Second, During acute illness fast, that is, live on water.

Third, Be moderate in eating.

Fourth, Masticate your food thoroughly.

Dr. J. H. Tilden teaches his patients the same in these words:

"Never eat when you feel badly.

"Never eat when you have no desire.

"Do not overeat.

"Thoroughly masticate and insalivate all your food."

Because these true dietetic principles are so important, probably being the most valuable information given in this book, let us give them enough consideration to fix them in the mind. They should be a part of every child's education. They should be so thoroughly learned that they become second nature, for if they are observed disease is practically impossible. Accidents may happen, but no serious disease can develop and certainly none of a chronic nature if these rules are observed, provided the individual gives himself half a chance in other ways. When the eating is correct, it is difficult to fall into bad habits mentally. Correct eating is a powerful aid to health. Health tends to produce proper thinking, which in turn leads the individual to proper acting.

First, Eat only when there is hunger: Hunger is of two kinds, normal and abnormal. The real or normal hunger was given us by nature to make us active enough to get food. If it were not for hunger, there would be no special incentive for the young to partake of nourishment and consequently many would die comfortably of starvation, perhaps enough to endanger the life of the race. Normal hunger asks for food, but no special kind of food. It is satisfied with anything that is clean and nourishing. It is strong enough to make a decided demand for food, but if there is no food to be had it will be satisfied for the time being with a glass of water and will cause no great inconvenience.

Abnormal hunger is entirely different. It is a very insistent craving and if it is not satisfied it produces bodily discomfort, perhaps headache. The gnawing remains and gives the victim no rest. Very often it must be pampered. It calls for beefsteak, or toast and tea, or sweets, or some other special food. If not satisfied the results may be nervousness, weakness or headache or some other disagreeable symptom.

When missing a meal or two brings discomfort, it is always a sign of a degenerating or degenerated body. A healthy person can go a day without food without any inconvenience. He feels a keen desire for food at meal times, but as soon as he has made up his mind that he is unable to get it or that he is not going to take any the hunger leaves. Normal hunger is a servant. Abnormal hunger is a hard master.

A person in good condition does not get weak from missing a few meals. One in poor physical condition does, although this is more apparent than real. In the abnormal person a part of the food is used as nourishment, but on account of the poor working of the digestive organs, a part decomposes and this acts as an irritant or a stimulant. The greater the irritation the more food is demanded. The temporary stimulation is followed by depression and then the sufferer is wretched. This depression is relieved by more food. Please note that it is relieved, not cured. The relief is only temporary.

All food stimulates, but only slightly. It is when the food decomposes that it becomes stimulating enough to cause trouble. It is well to remember that considerable alcoholic fermentation can take place in an abused alimentary tract. The stimulation obtained from too much food is very much like the stimulation derived from alcohol, tobacco or morphine. At first there is a feeling of well-being, which is followed by a miserable feeling of depression that demands food, alcohol, tobacco or morphine for relief, as the case may be, and no matter which habit is obtaining mastery, to indulge it is courting disaster. When a habit begins to assert itself strongly, break it, for later on it will be very difficult, so difficult that most people lack the will power to overcome it.

If there is abnormal hunger, reduce the food intake. Instead of eating five or six times a day, reduce the meals to two or three. It is quite common for such people to take lunches, which may consist of candies, ice cream, cakes, milk or buttermilk and various other things which most people do not look upon as real food. Take two or three meals a day, and let a large part of them be fresh vegetables and fresh fruits. Eat in moderation and the troublesome abnormal hunger will soon leave. By indulging it you increase it.

Many people get into trouble because they believe that they have to have protein, starch and fat at every meal. This is not necessary, for the blood takes up enough nourishment to last for quite a while. A supply of the various food elements once a day is sufficient, which means that protein needs be taken but once a day, starch once a day and fat once a day. Starch and fat serve the same purpose and one can be replaced by the other.

Cultivate a normal hunger, then fix two or three periods in which to take nourishment, and partake of nothing but water outside of these periods. If there is no desire for food when meal time comes, eat nothing, but drink all the water desired and wait until next meal time.

Second, During acute illness fast: This is so obviously correct that we should expect every normal individual to be guided by it. Even the lower animals know this and act accordingly.

According to this rule we should go without food when ill, but to do so is contrary to the teachings of medical men. They teach that when people are ill there is much waste, which is true, and that for this reason it is necessary to partake of a generous amount of nourishing food, so they give milk, broth, meat, toast and other foods, together with stimulants. Feeding during illness would be all right if the body could take care of the food, which it can not. In all severe diseases digestion is almost or quite at a standstill and the food given under the circumstances decomposes in the alimentary tract and furnishes additional poison for the system to excrete. Food under the circumstances is a detriment and a burden to the body. In fevers, the temperature goes up after feeding. This shows that more poison has entered the blood. In fevers little or none of the digestive fluids is secreted, but the alimentary tract is so warm that the food decomposes quickly. Feeding during acute attacks of disease is one of the most serious and fatal of errors. There is an aversion to food, which is nature's request that none be taken.

When an animal becomes seriously ill, it wants to fast, and does so unless man interferes. Here we could with advantage do as the animals do. Nature made no mistake when she took hunger away in acute diseases, and if we disregard her desires, we invariably suffer for it.

We should make it a rule to take no food, either liquid or solid, during acute disease.

Those who have had no opportunity to watch the rapidity with which people recover from serious illness may take the ground that sick people would starve to death if they were to be treated thus, for some of these acute diseases last a long time. Typhoid fever, for instance, occasionally lasts two or three months. It never lasts that long when treated by natural means, and it is very mild, as a rule. The fever will be gone in from seven to fourteen days in the vast majority of cases, and then feeding can be resumed.

Chronic disease is often due to neglected acute disease, at other times to the building of abnormality through errors of life which have not resulted in acute troubles. While acquiring chronic disease, the individual may be fairly comfortable, but he is never up to par. Most chronic diseases can be cured quickly by taking a fast, but usually it is not necessary to take a complete fast. The desire for food is not generally absent and there is usually fair power to digest. One of the most satisfactory methods, if not the most satisfactory one, of treating chronic disease is to reduce the food intake, and instead of giving so much of the concentrated staples, feed more of the succulent vegetables and the fresh fruits, cooked and raw, using but small quantities of flesh, bread, potatoes and sugar. This gives the body a chance to throw off impurities. There are always many impurities in a deranged body.

Third, Be moderate in your eating: This is often very difficult, for most people do not know what moderation is. In infancy the too frequent feeding and the overfeeding begin. The common belief that infants must be fed every two hours, or oftener, is acted upon. The result is that the child soon loses its normal hunger, which is replaced by abnormal hunger. When food is long withheld it begins to fret. The mother again feeds and there is peace for an hour or so. When mothers learn to feed their children three times a day and no more there will be a great decrease in infant ills and a falling off in the infant mortality. The healthiest children I have seen are fed but three times a day. They become used to it and expect no more.

Another thing that makes it difficult to be moderate is impoverishing the food through refinement and poor cooking. These processes take away a great part of the mineral salts which are present in foods in organic form. These salts can not be replaced by table salt, for sodium chloride is but one of many salts that the body needs and an excess of table salt does not make up for a deficiency in the others.

Children fed on refined, impoverished foods are not satisfied with a reasonable amount. There is something lacking and this makes itself known in cravings, which demand more food than is needed to nourish. I have noticed many times that children are satisfied with less of whole wheat bread than of white bread, and that the brown unpolished rice satisfies them more quickly and completely than the polished rice. In other words, depriving the foods of their salts is one of the factors that leads to overeating.

Simplicity is a great aid to moderation. It is also necessary to exercise the conservative measure, self-control. Some writers suggest to eat all that is desired and then fast at various intervals to overcome the effects of overeating. In other words, they advise to eat enough to become diseased and then fast to cure the trouble. This is better than to continue the eating when the evil results of an excessive food intake make themselves known, but it does not bring the best results. Such people have their spells of sickness, which are unnecessary. If they stop eating as soon as the disease makes itself known, it does not last long. By exercising self-control sickness will be warded off. By using will power daily it grows stronger and those who force themselves to be moderate at first, are in time rewarded by having moderation become second nature.

People should always stop eating before they are full. Those who eat until they are uncomfortable are gluttons. They should be classed with drunkards and drug addicts.

If discomfort follows a meal it is a sign of overeating. It would be well to read this in connection with the chapter that treats of overeating.

Fourth, Thoroughly masticate all food: Horace Fletcher has written a very enthusiastic book on this subject. Enthusiasm is apt to lead one astray, and even if thorough mastication will not do all that Mr. Fletcher believed, it is very important, and we owe Mr. Fletcher thanks for calling our attention to the subject forcibly.

Thorough mastication partially checks overeating.

Our foods have to be finely divided and subdivided or they can not be thoroughly acted upon by the digestive juices. The stomach is well muscled and churns the food about, helping to comminute it, but it can not take the place of the teeth. All foods should be thoroughly masticated. While the mastication is going on the saliva becomes mixed with the food. In the saliva is the ptyalin, which begins to digest the starch. Starch that is well masticated is not so liable to ferment as that which gets scant attention in the mouth. Starches and nuts need the most thorough mastication. If thorough mastication were the rule, meat gluttons would be fewer, for when flesh is well chewed large quantities cause nausea.

Milk digests best when it is rolled around in the mouth long enough to be mixed with saliva. To treat milk as a drink is a mistake, for it is a very nourishing food.

All kinds of nuts must be well masticated. If they are not they can not be well digested, for the digestive organs are unable to break down big pieces of the hard nut meats.

The succulent vegetables contain considerable starch. If mastication is slighted they often ferment enough to produce considerable gas.

Fruits are generally eaten too rapidly, and therefore often produce bad results. Even green fruits can be eaten with impunity if they are very thoroughly masticated.

Those who are fond enough of liquors to take an excess should sip their alcoholic beverages very slowly, tasting every drop before swallowing. This would decrease their consumption of liquor greatly.

Even water should not be gulped down. It should be taken rather slowly, especially on hot days. During hot weather many drink too much water. This tendency can usually be overcome by avoiding iced water and by drinking slowly.

These four rules should be a part of your vital knowledge. If you forget everything else in this book, please remember them and try to put them into practice:

Eat only when hungry.
During acute illness fast.
Be moderate in your eating.
Thoroughly masticate all food.