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Uselessness Of A Calorie Counter

By Dr. Eve Charns


Toss out your calorie counter. Pay no attention to the calorie count on food labels. Counting calories is a useless and simple-minded way to decide what you eat. How come? Firstly, a calorie is a unit of heat. Heat does not directly guide metabolism. When caloric heat is released, nothing will put it back.

Scientists define a calorie simply as the amount of heat necessary to raise a milliliter (cubic centimeter) of water one degree Celsius, at sea level and at room temperature. Consuming calories is like saying that you can eat heat.

Health professionals, trainers, nutritionists, and many other experts who ought to know better, wrongly equate food calories to metabolism. This is based on simple-minded reasoning that says calories from food provide you with energy. This is incorrect!

Since you now know that calories are merely heat, you can understand why the only thing they do is effect temperature. The help with maintaining body temperature, not directly with metabolism.

Do you realize how food calories are measured? We completely incinerate the food in a lab instrument called a bomb calorimeter. When a substance is completely burned up, until nothing except its charred remains are left, it has lost all the calories that it contained. When this is done in a bomb calorimeter, the amount of heat that is released is expressed as calories.

In a bomb calorimeter, carbohydrates yield 4 calories per gram, proteins yield 4 calories per gram, and fats yield 9 calories per gram. However, it is nonsense to suggest that these food groups provide you with anywhere near the amount of heat that they yield in a bomb calorimeter. You can see why the whole business of keeping track of food calories, as measured in a bomb calorimeter, for weight loss is so misleading as to be ridiculous.

If your body behaved like a bomb calorimeter, then the calorie count of foods, such as those on food nutrition labels, would have more meaning. Your metabolism, however, has nothing to do with what happens in a bomb calorimeter.

In the first place, you can only harvest 10 or 20 percent of the calories from food, maybe up to 30 percent on the high end. Some foods will yield no calories at all, regardless of what they yield in a bomb calorimeter. A calorie counter does you no good whatsoever in evaluating different foods for their metabolic value.

Think about it. In a calorimeter starch yields the same number of calories as cellulose, gram for gram. However, cellulose is indigestible fiber and starch is a source of food energy for people.

Likewise, a calorimeter will derive the same number of calories from equivalent amounts of celery and potato, after correcting for water content. Obviously, your body could not possibly do that.

Comparing the metabolism of food to how a calorimeter (furnace) works is not nearly as meaningful as understanding the fate of different foods when they are digested. It is especially meaningful to understand how different cells and tissues, such as fat vs. muscle, are impacted by different foods.

A possibly surprising comparison for you is the difference between two nearly identical sugars, fructose and glucose. They yield the same number of calories per gram. However, glucose passes through the liver intact and serves a metabolic energy for many kinds of tissues, most notably muscle and liver. In contrast, fructose never escapes intact from the liver. This is why counting calories for even nearly identical foods is so useless.

Note that, as a consequence of consuming glucose vs. fructose, glucose serves your entire body whereas fructose has to be converted to something else before it can move out of your liver. That something else is largely fat, which has to be stored in fat cells. Simply put, glucose gives your body energy and fructose makes you fat. The identical caloric yield of these two sugars means nothing.

By the way, once you understand what is truly important about foods of all kinds, which is clearly not their calorie content, you will be very clear on why calories have nothing to do with being overweight. Chew on that comment for a while (pardon the pun), because this is the kind of clear thinking that will guide you to success in any weight loss or fitness program that works for a lifetime.




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