We start by exploring the background to calorie counting. We learn about the complex relationship between calories, food and dieting, the role of appetite in regulating calorie intake, and how this mechanism can go wrong when we eat empty calories rather than quality calories.

A calorie is a unit of heat energy,technically defined as "the energy needed to raise the temperature of one gram of water by on degree centigrade" in the body,the process of metabolism converts the calories contained in food into the energy we need to live.

It is possible,using charts and tables to work out exactly how many calories we need for our age, height and activity level. However the bottom line is simple we need as many as we use.

If we eat more calories than we need,the extra energy released from food is converted into fat and stored for later use, if we don't use up our fat stores, we become overweight.

To obtain your personal analysis, which will contain a wide selection of foods for you to eat, the amount of weight you need to lose from the data you provide us, join the members area. These are the first steps to a healthier and slimmer lifestyle.