Some foods are more fattening than others.
This statement is not quite correct, calories do count. However, recent scientific evidence suggests that the calories from some foods are more fattening than from others. Let's take a look at the calorie content of different foods, and how these calories are used in our body. Proteins and carbohydrates each contribute four calories per gram, and fat contributes nine calories per gram to our energy needs. Fat, therefore, provides about 2.25 times as many calories as does protein and carbohydrate.