This section is from the book "Encyclopedia Of Diet. A Treatise on the Food Question", by Eugene Christian. Also available from Amazon: Encyclopedia of Diet.
The preceding lessons were written through a period of many years' active practise in treating diseases by scientific feeding. They were intended as a normal course to qualify doctors, nurses, and those who wished to treat disease by this method. However, the demand for this class of information has come from people in every walk of life, therefore the lessons, and all technical matter composing this entire work have been most carefully revised and rewritten in simple language so that any person of ordinary intelligence can comprehend them.
The following lesson is intended for the guidance of the practitioner in beginning his work in this branch of the healing art.
Inasmuch as nearly all human ills are caused by errors in eating, the preceding lessons have been confined almost wholly to diseases that originate in the digestive organs.
There are a great many abnormal conditions of the human body classed as diseases that bear a very remote relation to diet, but in practise the student will soon learn that many of these conditions, which have not been considered in these lessons, will entirely disappear when the diet is perfected. This is true because dietetic treatment, based upon the fundamental laws of nutrition, is reconstructive, hence every part of the anatomy shares in the general improvement.
There are many logical arguments to support the theory that there are no incurable diseases. There are many cases, however, where the vitality has become so low that recovery from disease is impossible, but if the patient could be taken in time, the correct diagnosis made, and the proper food, air, and exercise given, Nature would begin her work of rebuilding at once. In view of these facts it is somewhat difficult to fix a limit to the scope of scientific feeding.
Scope of scientific feeding.
The science of prescribing diet is a work that can be best conveyed to the patient in writing, hence one of the first and most important things for the new practitioner to do is to study the art of polemics - acquire the ability to write plain, convincing literature and letters. This is one of the greatest arts within the scope of human learning, and is probably susceptible of greater development than any other branch of human endeavor.
Every person has his own individual method of expression that should be preserved and cultivated. Select some good author and copy his logic, but not his language. For this purpose I would recommend the works of Henry George, the great economic philosopher - and probably one of the greatest polementi-tians that ever lived.
The student should begin by taking up some simple branch or certain subject of his work, and writing a short argument or essay upon it, using every fact that he can possibly command to convince imaginary readers of the correctness of his theories. Select a new subject and write something on it every day. This is merely mental calisthenics, and after a month's training the thoughts and the language will flow with a freedom that will enable the student to write just as he feels.
It would be well to arrange an argument based upon each lesson separately, dividing it into short chapters. These arguments or essays should be logically arranged to form a booklet, with proper title, as such representative literature is vitally necessary to the growth and the success of your work. It will also be found that this will be splendid mental exercise, and will serve well in presenting your work, either orally, or by letter.
Writing is mental calisthenics.
Every one should endeavor to be original in his literature; in other words, no special effort should be made to quote any "authority" or to copy the style of other writers. Put your own personality into your work, for the most successful writer is not always the one who uses the most learned, polished or scholarly language, but the one who can convey his thoughts to the minds of others in the simplest and the most comprehensive language.
Language at best is but a vehicle for conveying the thoughts of one person to the mind of another, and while there are accepted standards in literature and letters, from which one should not make too radical a departure, yet the ability to present one's convictions, or position convincingly should be of first consideration.
The most important thing in writing is to have something to say; then to say it so that it can be understood.
Experience is the only method by which theory can be converted into knowledge. The best possible source of information, therefore, is personal experimentation. If the student should have any disorder, especially of digestion and assimilation of food, or elimination of waste, he should experiment upon himself along the lines laid out in this course. He should keep an accurate record of selections, combinations, and proportions of food, with results or symptoms. He may thus be able to arrange menus for himself, even more effective than those given as examples or guides throughout the course.
If there are no personal disorders that will permit of such experiments, then they should be made upon some other person with whom the student is sufficiently familiar in order that accurate information concerning the results may be secured.
Though the student may be normal and healthy, it is possible to make many valuable experiments in regard to special adaptations of diet, such as combinations to induce natural sleep; to produce and to relieve constipation and diarrhea; to produce excessive body-heat when exposed to cold, or the minimum of heat in summer, or in warm climates.
 
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