When the last meal is taken before seven and people do not go to bed until nearly twelve, as is frequently the case in large cities, the custom of having something to eat just before bed is excellent for sleep. I have known the establishment of this habit to afford marked relief in cases of insomnia that had extended over years. The people in my experience who sleep the worst are those who, having taken a little cambric tea and some toast and preserves with perhaps a piece of cake for supper, think that this virtuous self-control in eating ought to assure them good rest. It has just the opposite effect. Disturbed sleep, full of dreams and waking moments, is oftener due to insufficient eating than to overeating. The people whom I know who sleep the best and from whom there are no complaints of insomnia, are those who, having eaten so heartily at dinner that they get to the theater a little late, attend the Follies or some late show for a while and then go round to one of the Broadway restaurants and chase a Welsh rarebit or some lobster a la Newburg, with a biscuit Tortoni or a Pêche Melba down [{162}] to their stomachs and then go home to sleep the sleep of the just.

Just as there are bad habits of eating too little that are dangerous and must be corrected by the will so there are bad habits of eating too much that can only be corrected in the same way. While it is dangerous to be under weight in the early years of life, it is at least as dangerous to be overweight in middle life. With the variety and abundance of food now supplied at a great many tables, it is comparatively easy for people in our time to eat too much. The result is that among the better-to-do classes a great many people suffer from obesity, sometimes to such an extent that life is made a burden to them. There is only one way to correct this and that is to eat less and of course to exercise more. Reduction in diet means the breaking of a long established habit and that of course is often hard. The whole family may have to set a good example of abstinence from too great a variety of food and especially from the richer foods, in order that a parent may be helped to prevent further development of obesity and to lose gently and gradually some of the overweight that is being put on, and which now, by conserving heat and slowing up metabolism [{163}] generally within the body, makes it so easy for even reduced quantities of food to maintain the former habit of adding weight.

In this matter of obesity, however, just exactly as in the case of tuberculosis for those who are underweight, prevention is much better than cure. The people who know that they inherit such tendencies should be particularly careful not to form habits of eating that will add considerably to their weight. After all, it is not nearly so difficult a matter as is often imagined. There is no need, unless in very exceptional cases, of denying one's self anything that is liked in the ordinary foods, only less of each article must be eaten. Even desserts need not be entirely eliminated, for ices may be taken instead of ice cream; sour fruits and especially those of the citrus variety—oranges and grapefruit—and the gelatine desserts may be eaten almost with impunity. The phrase "eat and grow thin" has deservedly become popular in recent years because as a matter of fact it is perfectly possible to eat heartily and above all to satisfaction without putting on weight. It is, of course, harder to lose weight, but even that may be accomplished gradually under proper direction if there is the persistent will to do it.

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In recent years another disease has come to attract attention which represents the result of an overindulgence in food materials that can be limited without much difficulty. This is diabetes which used to be comparatively rare but has now become rather frequent. An authority on the disease declared not long since that there are over half a million people in this country now who either have or will have diabetes as the result of the breaking down of their sugar metabolism. It is not surprising that the disease should be on the increase, for the consumption of sugar has multiplied to a very serious degree during the last few generations. A couple of centuries ago, those who wanted sugar went not to the grocery store, but to the apothecary shop. It was kept as a flavoring material for children's food, as a welcome addition to the dietary of invalids and the old, and quite literally as a drug, for it was considered to have, as it actually has, to a slight extent at least, some diuretic qualities that made it valuable. A little more than a century ago, a thousand tons of sugar sufficed for the whole world's needs, while the year before the war, the world consumed some twenty-two million of tons of sugar. It is said that every man, woman, and [{165}] child in the United States consumed on the average every day a quarter of a pound of sugar.

Our candy stores have multiplied, and while two generations ago the little candy stores sold candies practically entirely for children, eking out their trade with stationery and newspapers and school supplies, now candy stores dealing exclusively in confectionery are very common. There are several hundred stores in the United States that pay more than $25,000 a year rent, though they sell nothing but candy and ice-cream sodas. Corresponding with the increase in the sale of candy has come also the consumption of very sweet materials of various kinds. French pastries, Vienna tarts, Oriental sweetmeats, Turkish fig paste, Arabian date conserves, and West Indian guava jelly, are all familiar products on our tables. Chocolate has become one of the important articles of world commerce, though almost unknown beyond a very narrow circle a little more than a century ago. Tea and coffee have been introduced from the near and the far East and by a Western abuse consumed with such an amount of sweetening as make them the medium of an immense consumption of sugar.

There is no doubt that unless good habits [{166}] of self-denial in this regard are formed, diabetes, which is an extremely serious disease, especially for those under middle life, will continue to increase in frequency. The candy and sugar habit is rather easy to form; every one realizes that it is a habit, but it is sometimes almost as hard to break as the tobacco habit. We were meant to get our sugar by the personal manufacture of it from starch substances. If a crust of bread is chewed vigorously until it swallows itself, that is, dissolves in the secretions and gradually disappears, it will be noted that there is a distinctly sweetish taste in the mouth. This is the starch of the bread being changed into sugar. We were expected by nature to make our own sugar in this way, but this has proved too slow and laborious a way for human nature to get all the sugar it cared for, so most people prefer to secure it ready made. Sugar is almost as artificial a product as alcohol and is actually capable of doing almost as much harm as its not distantly related chemical neighbor. It is rather important that good habits in the matter should be formed and we have been letting ourselves drift into very unfortunate habits in recent years.

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CHAPTER XI
THE PLACE OF THE WILL IN TUBERCULOSIS

"And like a neutral to his will and matter
Did nothing."
Hamlet