NOSE-BREATHING AND HEALTH
Owing to its tendency toward unsightly redness and malformation, the nose is very apt to be looked at from a comic point of view. Wits and caricaturists fix on it habitually for their nefarious purposes, as if it were a sort of facial clown. Indeed, ninety-nine persons in a hundred, if questioned regarding the functions of the nose, would know no answer but this: that it is sometimes ornamental, and is remotely connected with the “almost useless” sense of smell.
We have seen, however, that besides being ornamental per se, the nose plays a most important æsthetic—as well as utilitarian—rôle in giving sonority and variety to human speech; and that it is, further, of great use as an apparatus for warming, moistening, and filtering the air before it enters the lungs. Hence the importance of nose-breathing. Professor Reclam states that city people at the age of thirty usually have a whole gramme of calcareous dust in their lungs, which they can never again get rid of, and which may at any time engender dangerous disease. This is one of the bad results of mouth-breathing, but by no means the only one. “The continued irritation from dry, cold, and unfiltered air upon the mucous membrane of the upper air tract soon results,” says Dr. T. R. French, “in the establishment of catarrhal inflammation, the parts most affected being the tongue, pharynx, and larynx.... The habit of breathing through the mouth interferes with general nutrition. The subjects of this habit are usually anæmic, spare, and dyspeptic.”
That mouth-breathing at night leaves a disagreeable taste in the mouth and leads to snoring, thus interfering with refreshing sleep, has already been stated. It also injures the teeth and gums by exposing them all night to the dry air. And in the daytime it compels one to keep the mouth wide open, which imparts a rustic if not semi-idiotic expression to the face. Moreover, think of the filthy dust you swallow in walking along the street with your mouth open. However, it is useless to advise people on such matters. An attempt is made for a day or two to reform, and then—the whole matter is forgotten. These points are therefore noted here not with any missionary intentions, but merely for their scientific interest.