Grape sugar and fruit sugar are the same chemically. Another name for them is dextrose, and in the form of dextrose sugar is ready to be taken up by the blood.
Children like sweets, but it is just as easy to give them the sweet fruits, such as good figs, dates and raisins, as it is to give them commercial sugar and candy, and it is much better for their health. Children who get used to the sweet fruits do not care very much for candies. The sugar in these fruits is not concentrated enough to be an irritant and it contains the salts needed by the body. Hence it does not rob the body of any of its necessary constituents. Because the fruit sugar, taken in fruit form, is not so concentrated and irritating as the common sugar, the child is satisfied with less.
Sugar is an irritant of the mucous membrane and therefore stimulates the appetite. This is true only when it is taken in excess in its artificial form, and it does not matter whether it is sugar, jelly or jam. For this reason jellies and jams should be used sparingly, because it is not necessary to stimulate the appetite. Those who resort to stimulation overeat. When much sugar is taken, it not only irritates the stomach, but it even inflames this organ.
Sugar is a preservative, and like all other preservatives it delays digestion, if taken in great quantities, and four ounces per day make a great quantity. The digestive organs rebel if they are given as much of sugar as they will tolerate of starch. When taken in excess sugar ferments easily, producing much gas, which is followed by serious results.
Sugar is changed into forms less sweet by acids and heat. The ferment invertin also acts upon sugars.
Sugar is a valuable food, but we are abusing it, and therefore it is doing us physical harm. The quantity should be reduced, and families who are using four ounces per person per day, as statistics indicate that most are doing, should reduce the intake to about one-third of this amount. It would be well to take as much of the sugar as possible in the form of sweet fruits.
It is a fact that sugar is easy to digest and that one can soon get energy from it, but feeding is not merely a question of giving digestible aliments, but a question of using foods that are beneficial in the long run. The moderate use of this food is all right, but excess is always bad. Starches need more change than sugars before they can be absorbed by the blood, but they give better results. Chemically there is but small difference between starch and sugar. The starch must be changed into dextrose, a form of sugar, before it can be utilized by the body.
The human body contains a small amount of a substance called glycogen, which is an animal starch or sugar. This glycogen is burned. Sugar is a force food. It combines with oxygen and gives heat and energy. The waste product is carbonic acid gas, which is carried by the blood to the lungs and then exhaled.
Honey and maple sugar are good foods, but overconsumption is harmful.
Sugar eating is largely a habit. Because the sugar has so much of the life and so many of the necessary salts removed in its refinement it is a good food only when taken in small quantities. Nature demands of us that we do not get too refined in our habits, for excessive refinement is followed by decay. It is easy to overcome the tendency to overeat of sugar.