Keith Ayoob answers the question: 'What are Calories, Why Do They Matter?' February 1, 2009 -- Question: What is a calorie and why is it important to know how many calories there are in certain foods?

When you’re trying to lose weight, calorie counting and carbohydrate counting are two approaches you can take. Calorie counting involves applying the principle of “calories in, calories out.” To lose ...

What Is a Calorie Deficit? Calories are a measure of the amount of energy in food. All of the cells in your body require energy in order to work properly, just like a car needs fuel. They get that ...

People with overweight or obesity may use a low calorie diet to lose weight. However, there are some potential risks to following a low calorie or very low calorie diet plan. This article will define ...

If you've been following a low-calorie diet and splurged one day, you may be surprised to find that you didn't gain any weight. Some dieters do this on purpose. This is often called calorie cycling or ...