Dr. S. P. Beebe, now of the Cornell Medical College Laboratory, New York City, has made some very valuable experiments with alcohol. It is well known that impairment of the functions of certain organs results in the appearance in the urine of nitrogeneous compounds which do not normally occur there. In certain diseases of the liver the same quantity of nitrogen may be excreted as in health, but a portion of it is in the form of acids never found in the urine during health. Dr. Beebe, with this knowledge in mind, sought to discover the effects of alcohol upon the excretion of uric acid in man. Most of the experiments were made on the same person, a young man in good health, of regular habits, unaccustomed to the use of alcohol in any form. Absolute alcohol, diluted with water, whisky, ale, and port wine were used at different times. Dr. Beebe reported his experiments in the American Journal of Physiology, vol. 12, No. 1. His conclusions are given as follows:—
“After a consideration of these experiments, it hardly seems possible to doubt that alcohol, even in what is considered by the most conservative as a moderate amount, causes an increase in the excretion of uric acid, and this effect is seen almost immediately after taking the alcohol. The following points indicate that the effect is due to a toxic effect on the liver, thereby interfering with the oxidation of the uric acid derived from its precursors in the food: Alcohol taken without food causes no increase. The maximum increase occurs at the same time after a meal as it does when purin food but no alcohol is taken. Alcohol is rapidly absorbed and passes at once to the liver, the organ which has most to do with the metabolism of proteid cleavage products.
“There is no evidence that the alcohol has merely hastened the excretion of urates normally present in the blood; the increased excretion means that a larger quantity has been in circulation, and although it is classed by Van Noorden among the substances easily excreted, still most physiologists would consider the presence in the blood of this larger quantity as undesirable. Certainly in pathological conditions it might be harmful.
“If we accept the origin of the increased quantity of uric acid to be in the impaired oxidative powers of the liver, the results of these experiments will have greater significance than can be attributed to uric acid alone. For the impaired function would affect other processes which are normally accomplished by that organ, and the possibilities for entrance into the general circulation of toxic substances, of intestinal putrefaction, for instance, would be increased. The liver performs a large number of oxidations and syntheses designed to keep toxic substances from reaching the body tissues, and if alcohol, in the moderate quantity which caused the increase in uric acid excretion, impairs its power in this respect, the prevalent ideas regarding the harmlessness of moderate drinking need revision.”
Dr. Winfield S. Hall, professor of physiology at the Northwestern University Medical School, Chicago, has interpreted these researches of Beebe and Hunt in a very striking way. He says that they prove that the oxidation of alcohol in the body is a protective oxidation, the same as the oxidation of any other poisonous substance by the liver. His views have such an important bearing upon the commonly accepted theory that alcohol is in some sense a food that they are given here, somewhat abbreviated, as a fitting finish to this chapter. Dr. Hall says:—
“The fact that alcohol is oxidized in the body has been generally misunderstood. The first impression naturally was: ‘Foods are Oxidized; Alcohol is Oxidized; therefore alcohol is a food.’ But many difficulties appeared. A real food promotes muscular, glandular and nerve activity, and its oxidation maintains body temperature. But alcohol disturbs muscular, glandular, and nervous activity, and its oxidation does not maintain body temperature. When one eats a real food it is assimilated largely by muscle tissue and is oxidized for the purpose of liberating the life energy. When one ingests alcohol it is carried by the blood to the tissues, mostly to the liver, where it is oxidized, as any toxine would be, for the purpose of making it harmless. Its oxidation liberates heat energy but this energy cannot be utilized by the body even for the maintenance of body temperature. If a food is defined as a substance which, taken into the body, is assimilated and used either to build or repair body structure, or to be oxidized in the tissues to liberate the energy used by the tissue in its normal activity, then alcohol is not a real food.
“But, if alcohol is not a real food, what is the significance of its oxidation? It has been long known that the liver produces oxidases and that it is the site of active oxidation of mid-products of katabolism of toxins and of other toxic substances. Alcohol, usually formed as an excretion of the yeast plant, is also found as a mid-product of tissue katabolism. On a priori grounds we should expect alcohol to be oxidized in the liver along with leucin, tyrosin, uric acid, xanthin bodies, and various amido bodies. There have recently appeared two most important papers based upon extended researches upon man and lower animals. These researches practically clear up this knotty question.”
Dr. Hall then reviews the work of Dr. Reid Hunt and Dr. S. P. Beebe, and continues:—
“The value of this work can hardly be over-estimated. In the first place the rapid oxidation of the alcohol in the liver is explained. Alcohol itself being one of the toxic substances which reach the liver from the alimentary canal is at once attacked by the liver, and if the oncoming tide of alcohol is not too great it will practically all be oxidized.