FOOD THAT IS UNHEALTHFUL IN NATURE, OR MADE SO BY COOKING.
The most injurious food, of any in common use, is the animal oils, and articles cooked with them. On this subject, Dr. Pereira remarks:—“Fixed oil, or fat, is more difficult of digestion, and more obnoxious to the stomach, than any other alimentary principle. Indeed, in concealed forms, I believe it will be found to be the offending ingredient in nine-tenths of the dishes which disturb weak stomachs. Many dyspeptics who avoid fat meat, butter, and oil, unwittingly eat it in some concealed form. Liver, the yolk of eggs, and brains, such individuals should eschew, as they abound in oily matter.”
“The influence of heat on fatty substances effects chemical changes, whereby they are rendered more difficult of digestion, and more obnoxious to the stomach. Hence those culinary operations in which fat or oil is subjected to high temperatures, are objectionable.”
“Fixed oils give off, while boiling, carbonic acid, an inflammable vapor, and an acrid oil, called Acroleon, while the fatty acids of the oil are, in part, set free. It has always appeared to me that cooked butter proves more obnoxious to the stomach than cooked Olive oil. This I ascribe to the facility with which, under the influence of heat, the acrid, volatile acids of butter are set free. The fat of salt pork and bacon is less injurious to some dyspeptics than fresh animal fats. This must depend on some change effected by curing.”
“In many dyspeptics, fat does not become properly chymified. It floats on the stomach in the form of an oily pellicle, becoming odorous, and sometimes highly rancid, and in this state excites heartburn, disagreeable nausea, eructations, and sometimes vomiting. It appears to me, that the greater tendency which some oily substances have than others to disturb the stomach, depends on the greater facility with which they evolve volatile, fatty acids, which are for the most part exceedingly acrid and irritating. The distressing feelings excited in many dyspeptics by mutton fat, butter, and fish oils, are, in this way, readily accounted for. Butter contains no less than three volatile, fatty acids, namely—the butyric, capric, and capröic. Fats, by exposure to the air, become rancid, and in this state are exceedingly obnoxious to the digestive organs. Their injurious qualities depend on the presence of volatile acids, and in part also on non-acid substances.”
These statements show the reasons why the fried food of all kinds is injurious. Fat is an unhealthful aliment, and when heated becomes still more so. This mode of cooking, then, should be given up by every housekeeper, who intends to take all reasonable means of preserving the health of her family. There are an abundance of other modes of preparing food, without resorting to one which involves danger, especially to children and invalids, whose powers of digestion are feeble.
The most common modes of preparing unhealthful food, is by frying food, and by furnishing bread that is heavy, or sour, or so newly baked, as to become clammy and indigestible when chewed. Though there are many stomachs that can for a long time take such food without trouble, it always is injurious to weak stomachs, and often renders a healthful stomach a weak one. A housekeeper that will always keep a supply of sweet, light bread on her table, and avoid oily dishes, oily cooking, and condiments, will double the chances of good health for her family.
Minuteness of division is a great aid to easy digestion. For this reason food should be well chewed before swallowing, not only to divide it minutely, but to mix it with the saliva, which aids in digestion.
The cooking of food, in most cases, does not alter its nature; it only renders it more tender, and thus more easily divided and digested.
When a person is feverish and loathes food, it should never be given, as the stomach has not sufficient gastric juice to secure its digestion. The practice of tempting the sick by favorite articles, should therefore be avoided.