"Making Sense of Grams and Calories"

A calorie is defined as the amount of heat necessary to increase the temperature of one kilogram of water by one degree at one atmosphere. It is used nutritionally to show the energy producing potential of food. Carbohydrates and protein will yield four calories per gram. One gram of fat will yield between eight and nine calories.

This can be misleading. The over consumption of carbohydrates and protein will result in the excess food(fuel) to be converted and stored as fat. It is important to understand that it simply isn't eating fatty foods that can increase your fat stores. The over consumption of proteins and carbohydrates will also lead to an increased level of body fat.