THE VALUE OF COD-LIVER OIL IN THE PREVENTION OF CONSUMPTION.

There is a broad but not commonly recognized distinction between what

constitutes a medicine and a food. All the materials that normally

enter into the composition of the living body, and are necessary to

the maintenance of health and strength, may be property classed as

foods, whether they be obtained from the animal, vegetable, or mineral

kingdoms; thus the iron, sulphur, phosphorus, lime, potash, etc.,

required by the system usually exist in and are organically combined

with the various foods in common use, and they are perhaps quite as

essential to the physical well-being as albuminoid, fatty, and

saccharine matters. When the system is suffering from lack of any of

the above mentioned chemicals, their administration is to be regarded

as the giving of nutritive substances, although they be prescribed by

a physician in divided doses and procured from a pharmacist.

On the other hand, a medicine is any substance that does not naturally

enter into the composition of the body, but which has the power, when

skillfully used, to modify the physical processes so that

physiological disorder--disease, shall be replaced by physiological

harmony--health. Belladonna, hyoscyamus, opium, etc., are familiar

examples of medicaments. Therefore a food is any substance that is

capable of directly contributing to the nutrition of the body, and

medicine is a substance competent, under proper conditions, to secure

the same results indirectly. Viewed in the light of the above

definition, cod-liver oil is to be regarded as a very valuable food,

as well as a most effective remedy both for the prevention and cure of

consumption.

I have previously stated that food is divided by physiologists into

three great classes. The albuminoids are used to build up the

organism, while the fatty and saccharine are burned in the body to

keep it warm. Although these are the chief functions devolving on the

above mentioned food elements, yet they are mutually interdependent on

each other for the proper performance of their several offices. Thus

the albuminoids cannot undergo the wonderful vitalizing process

necessary to fit them to enter into and form part of the living body,

except an adequate quantity of fatty matter be present to assist in

the vital transformation. On the other hand, the assistance of the

albuminoids is equally necessary to enable the fatty and saccharine

foods to maintain the internal heat of the body. Of all fatty matters,

whether derived from the animal or vegetable kingdom, none possesses

the property of stimulating and perfecting the nutritive processes in

so high a degree as cod-liver oil; it is more readily emulsified and

fitted for absorption by the pancreatic secretion during intestinal

digestion than any other fatty matter of which we have any knowledge.

The beneficial effects of its use have been proved in myriads of cases

of confirmed consumption, and if it were used for prolonged periods by

persons who are losing weight, and whose breathing capacity is too

little, along with effective cultivation of the latter function, many

persons would escape this disease who now succumb to it.

THE INFLUENCE OF NORMAL BREATHING ON THE FEMALE GENERATIVE

ORGANS.

[Illustration: FIG. 1.]

The body is divided into three separate stories by two partitions. The

diaphragm, A, separates the cavity of the chest from that of the

abdomen. The partition, _D_, forms a floor for the digestive cavity,

F, and a roof for the pelvis; the pelvic cavity is occupied mainly by

the generative organs. The upper part of the uterus is firmly fixed to

the partition, D, by which the pelvis is covered. Now, the diaphragm,

A, and the external respiratory muscles are in ceaseless motion

performing the act of breathing. The diaphragm acts like the piston of

a pump, both on the lungs above, and on the contents of the abdominal

and pelvic cavities below. When it rises from B to A, it diminishes

the size of the thoracic cavity, compresses the lungs, and assists in

the expiratory part of breathing; at the same time it acts through the

contents of the abdominal cavity on the pelvic roof, D, to which the

uterus is attached, and raises it from D to C. When the diaphragm

contracts, it descends from A to B, increases the size of the thoracic

cavity, inflates the lungs, promotes the inspiratory part of

breathing, pushes the walls of the chest and abdomen outward from F to

E, and lowers the pelvic roof at the same time the uterus sinks from C

to D. When the effect of these respiratory motions is not diminished

by muscular debility, rigidity of the thoracic walls, or by unsuitable

clothing, they have so direct an effect on the pelvic contents that

the uterus and its appendages make two distinct motions every time a

woman breathes. When the diaphragm rises and the breath is expelled,

the womb is elevated from one inch to one inch and a half, because the

roof of the pelvis, to which it is attached, is lifted about this

distance, because of gentle suction from above. The uterus and its

appendages are thus kept in constant motion, up and down, chiefly by

action of the muscles by which breathing is carried on.

Several influences combine to maintain the circulation of the blood.

The pumping action of the heart and the affinity of the blood for the

walls of the capillary vessels require to be assisted by the motion

both of the body as a whole and of its parts in order to keep the

circulation flowing equably through every tissue. Therefore muscular

action and the resulting bodily motion play a very important part in

maintaining the general and local blood circulation. During the

contraction of a muscle, the blood current flowing through it is, for

the time being, retarded, but when relaxation occurs the blood flows

into its vessels more freely than if no momentary cessation had taken

place. When the body or any of its parts is deprived of motion, the

blood circulation stagnates, and the nutrition, general or local, as

the case may be, promptly becomes impaired. This is specially true of

the uterus. Gentle but constant motion is absolutely essential to keep

up a healthy uterine blood circulation. Nature has provided for the

automatic performance of all the ceaseless internal motions that are

necessary to the continuance of life and the preservation of health;

thus the heart beats, the respiratory muscles act, the stomach

executes a churning motion during gastric digestion, the intestines

pass on their contents by worm-like contractions, automatically

without our supervision and without causing fatigue, being under the

control of the sympathetic system of nerves chiefly. It is equally

true, but not so well recognized, that the previously described

motions that are committed to the pelvic organs from the respiratory

apparatus are absolutely necessary to the continued health of the

uterus and its appendages. But the womb is not under the control of

the voluntary muscles, therefore it cannot be directly moved by them,

nor are its necessary motions influenced by the sympathetic system of

nerves as are the heart, stomach, and intestines, etc., but it is

fortunately under the indirect but positive control of involuntary

muscles that never, as long as breathing continues, cease their work.

Nature has thus made ample provision to keep the uterus in automatic

motion. As before stated, the natural ceaseless heavings of the lungs,

chest, and diaphragm, aided by the muscles inclosing the abdomen, have

the duty assigned them of communicating automatic motion to the uterus

and the other contents of the pelvis. When the diaphragm descends from

A to B, and the lungs are filled with air, the uterus sinks in the

pelvic cavity in obedience to the downward pressure from above, as

before stated; the circulation through the uterus is then for a moment

retarded, but the next instant, when the lungs are emptied of air and

the diaphragm rises, the blood flows forward more freely than if it

had not been momentarily obstructed. Ample provision has thus been

made to maintain a healthy circulation through the uterus.

The uterine motions I have described are fully adequate for the

purposes indicated. But when the natural stimulus of motion is

withheld, the circulation becomes sluggish causing congestion, which

may develop into inflammation. Under these conditions the uterus

gradually becomes displaced, falling backward, forward or downward as

the case may be. The blood vessels by which the uterus is supplied

thus have their caliber diminished by bending; the circulation through

them is retarded just as the flow of water in a rubber tube is

obstructed by a kink. A very good idea of what occurs in the uterus

under the conditions just described may be obtained by winding a

string around the fingers.

As the coats of the arteries are thick, and the pressure exerted by

the ligature has less power to prevent the arterial blood flowing

outward past the string to the end of the finger than it has to

prevent the return of the venous blood toward the heart, therefore the

part beyond the ligature soon becomes congested, the blood stagnating

in the capillaries. If the ligature be sufficiently tight and kept on

long enough, mortification will take place, but if the circulation be

only moderately obstructed, the congestion will continue until

ulceration occurs. A similar condition is developed in the uterus when

the necessary natural stimulus of motion fails to be communicated to

it or when it is so far out of its proper place that the circulation

through it is obstructed.

I believe the above described condition to be a most potent but

inadequately recognized cause of the various forms of uterine diseases

that distress so many women.

Scientific American Supplement, No. 388, June 9, 1883 · 第 60 / 79 题