WHY DO WE NEED TO EAT PROTEIN EVERY DAY? Some nutrients, like - TopicsExpress



          

WHY DO WE NEED TO EAT PROTEIN EVERY DAY? Some nutrients, like vitamin B12, are stored within the body and released when needed—so though we must consume a certain amount on average, we don’t have to do so every day in order to keep ourselves healthy. Unfortunately, we have no way to store amino acids. We have a tremendous capacity to store fat in fat cells, and a very limited capacity to store glucose (as glycogen in our muscles and liver)—but we must either use amino acids to synthesize proteins, burn them for energy, convert them to glucose, or (very rarely, and if all else fails) excrete them. Therefore, humans have a daily requirement for each one of the amino acids necessary to life, in the quantities required by whatever proteins the trillions of cells in our bodies are making (minus our ability to synthesize some of them). WHY “COMPLETE PROTEIN” IS IMPORTANT: Imagine a factory that assembles cars. Let’s say you have 400 wheels and tires in inventory, 200 headlights, 100 chassis, 100 engines…but only ten steering wheels. It doesn’t matter that you’ve got almost enough parts to build 100 cars: ten steering wheels means you can build ten cars. Whichever part you have the fewest of limits how many cars you can build. Our bodies have the same problem when building proteins. For instance, lysine is an essential amino acid—so if we haven’t consumed any lysine, we can’t build any proteins that contain lysine, no matter how many of the other amino acids are available. This leaves us with two options: Don’t build that protein. This is not usually a viable option, as it results in signals not reaching the intended recipient, damaged cells and tissues not being repaired, pathogens not being attacked…in other words, the failure of basic metabolic processes. Disassemble existing tissues in order to get the amino acid(s) we need. This is known as catabolysis or ‘going catabolic’, and is what actually occurs. Muscles are the first tissues to be catabolized, as becoming slightly weaker is usually less harmful than impairing the function of other organs. ONE MORE ……. SHARE
Posted on: Thu, 13 Mar 2014 10:00:00 +0000

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