شرکت در آزمون آنلاین زبان انگلیسی 1 - زبان انگلیسی 1 | آزمون شماره 13963

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Protein plays a very important role in a successful health, beauty, and anti-aging program. It is the basic material of life. In fact, the word protein comes from an ancient Greek word meaning “of first importance.”

The body could not grow or function without it. As protein is digested, it breaks down into amino acids, which are then used by the cells to repair themselves. Since the human body can manufacture only 11 of the 20 amino acids that are essential for life, the remaining 9 must be provided through the intake of dietary protein.

 Without enough protein, our bodies enter into a fast aging mode. Our muscles, organs, bones, cartilage, skin, and the antibodies that protect us from disease are all made of protein. Even the enzymes that take part in essential chemical reactions in the body - from digestion to building cells - are made of protein. If your cells do not have complete access to all the essential amino acids, cellular repair will be incomplete and also much slower.

 It’s important to note that protein cannot be stored in our bodies, therefore, we need to have a good source of quality protein at each meal for optimum health and cellular repair.

What aspect of protein does the passage mainly discuss?

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