Elmer: Is salt a food, mother?
Mother: No; salt is a mineral, yet it is found in all parts of the body. It is also found in nearly all our foods. We add it to some things when cooking to give them flavor, but it is hurtful to eat much of it.
Amy: Are mustard, pepper, spices, ginger, and hot sauces good to eat?
Mother: No; some people think they taste good, but they are bad for the body. If you put some mustard on your skin, it makes it red, and may cause a blister. You know a very little pepper in your eye makes it smart. These hot things in the kitchen of our body-house make the walls red, and the cooks get very cross. When people eat such things, they become thirsty, and sometimes, instead of drinking water to cool the heated walls and put out the fire these hot things have made, they pour down beer, whisky, and other drinks, which makes the mischief worse. When once the habit is formed of using such things, they keep wanting them hotter and stronger, till nothing tastes good unless it is highly seasoned. Many become ill, and this is one way drunkards are made.
Helen: But how do they make drunkards, mother?
Mother: These hot things which people sometimes put in the stomach make them thirsty, as I have said, and so they think they must have beer or something stronger. Such drinks do not quench thirst, and so they keep on drinking more and more. If you want the walls of your body-kitchen to be a pretty pale pink color, you will keep the doors shut tight against mustard, spices, pepper, and all hot sauces. You can teach your taste to like the fine flavors which are in our foods already, and which do no harm to the body.
Amy: But sugar is a good food, isn’t it, mother?
Mother: I thought my little girl who is so fond of sweet things would ask this question. It is true sugar is a food, but to use much of the kind we buy is hurtful to the body. Nearly all the foods we eat, such as flour, oatmeal, pease, beets, and milk, have sugar in them. Some fruits, such as figs and grapes, have a large amount. It is not well to eat food made very sweet with sugar, such as rich cakes, jams, and preserves. It is also harmful to eat candies and lollies, for many are made from a poor kind of sugar, and the coloring matter used to make them look pretty is hurtful. Besides, as the body-house has a sugar factory of its own, you see it gets too much sugar when we eat many sweet things.
Helen: But where is the sugar factory, mother?
Mother: The liver, the largest worker in the house we live in, makes a kind of sugar, as well as the bitter bile. How it is done I can not tell, but it is true that in the hundreds of little rooms of which the liver is made, all the sweet things we eat are changed to liver sugar before they can be used in the body. The liver, also, makes starch into sugar, I mean the starch found in bread, potatoes, and other foods. Now if the fireman on an engine should shovel so much coal into his furnace that it was filled full, what would happen?