All of us eat every day, but most of us don't understand the study about nutrition. We often make mistakes when talking about how to keep a good diet. For example, many people think that food such as rice, bread, and potatoes will make one fat. But this kind of food is very good for one's health. It's good source of many vitamins and it contains less amount of calories. Some people don't like frozen vegetables, because they think fresh vegetables cooked at home are always better. This is wrong again. In fact, whether the vegetables are good or not depends more on how they prepared. Overcooking, for example, destroys many good qualities of vegetables. Vegetables cooked in too much water can lose a great deal of vitamins. It is also wrong to say that vegetables grown in poor, worn-out soil are lower in vitamins than vegetables grown in rich soil. The vitamins are in the plants themselves. They don't come from the soil. However, the minerals in a plant depend on the minerals in the soil. In short, there are many wrong ideas about nutrition. We need to correct them.