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Calorie Definition and Weight Loss

The food calorie is sometimes capitalized as Calorie to distinguish it from the chemistry calorie; however, this capitalization is rarely observed in practice. The Nutrition Calorie Nutritionists measure the energy content of food in "calories" (sometimes capitalized and abbreviated as Cal or sometimes C, or abbreviated kcal as if small calories were being used), where each food calorie represents 4,186 joules. This is equivalent to 1000 of the calories used in chemistry, and thus the food Calorie would be called a kilocalorie if small calories were being used. However, in chemistry calories have been deprecated as a scientific unit of measure in favor of joules, and therefore in common modern usage the word "calorie" usually refers to a food calorie. This situation provides two ways of talking about the amount of calories in food which look quite different but that express the exact same amount of energy. One may say that dietary fat has nine kilocalories (k

After A Diet, Why Does The Weight Come Back?

Before many Australians recently, a devastating story unfolded on a popular current affairs program. We watched with compassion as the fattest man in Australia told of his most recent, serious attempt to lose weight. Approximately 12 months earlier and weighing close to 300 kilos, he under went life threatening surgery to lose weight. I doubt there would have been one person watching not moved by this man's depression and plight. Despite undergoing the surgery, today he could barely get through each day, both physically and mentally. He shared with us his sense of hopelessness and wanting to end it all. It was not only his size that was causing his depression. He had to deal with a heart broken by disappointment. You see, the surgery had been a success. He soon lost well over 50 kilos post operation and he and his family rejoiced. But then the unthinkable happened. The weight came back. Today he weighs well over 300 kilos - more than before the surgery. This is an extr