These are the Real Facts about the Metabolism of Fat

One out of every ten people in the world is obese. By 2015 numbers, 604 million adults and 108 million children are significantly obese. Yet, almost no one seems to know how exactly fat metabolism works. Any diet that supplies less “fuel” than it burns will do the trick, the problem is that with so many misconceptions about how weight loss works, few know why this will happen. The world is obsessed with fads of low fat diets and with weight loss, however, very few really know how a kilo of fat disappears from the scale. Not even dieticians and personal trainers do. In fact, they show a surprising gap in their health knowledge. The most common erroneous response is to believe that fat is converted into energy. If this were the case, a universal disaster could be triggered, because that is the process followed by the nuclear reactions, applying Einstein’s formula, in which a very small mass can result in a huge amount of energy and, each one of us would become walking bombs. The problem with this idea is that it violates the law that all chemical reactions obey: that of conservation of matter, matter is not created or destroyed, it is transformed. There are professionals who think that fat becomes muscle, something that is impossible. Others assumed that it escapes through the colon. Only  small sample of nutrition professionals provided the correct answer. This means that 98% of the health professionals are not able to explain how weight loss works. So, if none of the options they gave is correct, then where does the fat go? These are real facts about the metabolism of fats The correct answer is that fat is converted into carbon dioxide and water. We exhale carbon dioxide and water mixes in the circulation until it is lost in urine or sweat. Thus, for example, if 10 kg of fat are lost, 8.4 kg leave through the lungs and the remaining 1.6 kg are converted into water. In other words, almost all the weight we lose is exhaled. This is surprising for many, but the reality is that almost everything we eat comes out of us through the lungs. Every carbohydrate we digest and almost all fats are converted into carbon dioxide and water. The same goes for alcohol. And proteins also share the same fate, except for a small part that is converted into urea and other solids that are excreted in the form of urine. The only food that reaches the undigested and intact colon is dietary fiber. Everything else is absorbed into the bloodstream and organs, and then stays there until we vaporize it. In school, we all learn that, according to the first principle of thermodynamics, the energy that enters, accumulates, is expelled or both. But the concept of energy is really confusing, even for health professionals and scientists who study obesity. The reason why we gain or lose weight is much less mysterious if we track every kilo of food we eat, and not just those calories. Often times, government health agencies take into account how much food or drink we ingest, in order to determine nutritional habits, but what is not counted is that people inhale more than 600 grams of oxygen, and this figure also affects our weight losss and gain. If we put 5 kg of food and water in our body, plus 600 grams of oxygen, we will have to remove the complete 5.6 kg or we will gain weight. And if the intention is to lose weight will have to remove more than 5.6 kg. But how is this achieved? The carbohydrates, fats, proteins and sugar that most people eat every day will produce exact and easily determined amounts carbon dioxide, water, urea and others solids excreted in the form of urine. The resting metabolic rate, that is, the speed at which the body uses energy when the person does not move-from an average produces approximately 590 grams of carbon dioxide per day. No pill you can buy will increase that number, despite the bold claims we may hear. The good news is that we exhale 200 grams of carbon dioxide every night while we sleep, so we exhale a quarter of the daily target even before getting out of bed. So, if the fat turns into carbon dioxide, does simply breathing more can help you lose weight? Unfortunately not. Breathing and puffing more than we need is called hyperventilation and the only thing you get with this is dizziness or fainting. The only way to increase the amount of carbon dioxide produced by the body is by moving the muscles. This is why lifting heavy weights makes your belly smaller than doing aerobic exercise. But here’s good news. Simply standing up and getting dressed more than doubles the metabolic rate. In other words, if we will spend 24 hours trying on all the clothes we have, we would exhale more than 1,200 grams of carbon dioxide. Other more realistic examples include going for a walk, which triples the metabolic rate, and also cooking, vacuuming or sweeping. Metabolizing 100 grams of fat consumes 290 grams of oxygen and produces 280 grams of carbon dioxide and 110 grams of water. The food we eat cannot change these figures. Therefore, to lose 100 grams of fat, you have to exhale 280 grams of carbon dioxide […]

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