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Proteins are molecules that consist of amino acids, which help our body and its cells function properly. Human body, organs, muscles and bones contain a great amount of protein, which plays a significant role in body functioning (Rosenberg, 2005). There are five main types of protein and each of these types has its own purpose: structural, storage, hormonal, enzyme and immunoglobulin. Amino acids are the building blocks of protein, and without them, organism is not able to function at all. However, amino acids are required to build body tissues, and besides, they are responsible for body regulation functions, such as growth and digestion.

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Nevertheless, there are several risks connected with protein deficiency and overconsumption. If a person gets not enough protein, it can lead to malnutrition. As a result of protein under consumption, an individual can have frequent infections, fatigue, failure of thrives, loss in muscle mass, etc. On late stages, it can cause more serious problems, such as permanent physical and mental disabilities, which can even lead to coma and early death. However, overconsumption of protein has its own disadvantages. It can cause problems with kidneys, internal organs and even make a contribution to cancer.

IOM recommends the next protein volume for males, based on age: 0 to 12 months, 11 g; 2 to 4 years, 14 g; 5 to 9 years, 20 g; 10 to 14 years, 35 g; 15 to 18 years, 53 g; 19 to 70 and more years, 56 g.

However, many nutrient sources can be unhealthy for human. Seafood is a good source because it is usually low in fat. Moreover, dairy foods are also a good source due to high containment of calcium and vitamin D. Eggs are one of the cheapest forms of protein; an adult can have one egg per day, without any concerns.

To sum up, protein is very important for human’s health, but sometimes, high protein diet can have a negative effect. There are three main effects that can cause high protein diet: risk of osteoporosis, negative influence on kidneys and other internal organs, and cause cancer (“5 Negative High Protein Diet Effects”, n.d.).

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