Nutrition and health - Nutrition and health 1.How important...

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1.How important nutrition affects our health: Shih, Meng Yun Nutrition is the intake of food, considered in relation to the body’s dietary needs. Good nutrition – an adequate, well balanced diet combined with regular physical activity – is a cornerstone of good health. Poor nutrition can lead to reduced immunity, increased susceptibility to disease, impaired physical and mental development, and reduced productivity. 2. Introduction to basic nutrition: a. protein:   Proteins are part of every cell, tissue, and organ in our bodies. These body proteins are constantly being broken down and replaced. The protein in the foods we eat is digested into amino acids that are later used to replace these proteins in our bodies. Protein is found in the following foods: meats, poultry, fish, legumes (dry beans and peas), tofu, eggs, nuts and seeds, milk and milk products, grains, some vegetables, and some fruits (provide only small amounts of protein relative to other sources) b. lipid: Most of the lipid found in food is in the form of triglycerides which are fatty acid esters of glycerol. Other types of dietary lipids are cholesterol and phospholipids. Lipids are a concentrated source of energy providing more than double the amount on a per-weight basis than that contained in either carbohydrates or proteins. They help maintain body temperature through both their insulating effects and the heat generated from their oxidation. The food contains lipids are meats, breads, cheeses, milk, and more. c. carbohydrate: Carbohydrates are the major source of energy for the body. They are composed mostly of the elements carbon , hydrogen and oxygen. The body utilizes most carbohydrates to generate glucose, which serves as the basic functional molecule of energy within the cells of the human body. When the supply of carbohydrates is too low to adequately supply all the energy needs of the body, amino acids from proteins are converted to glucose. Examples of foods high in complex carbohydrates include potatoes, beans, and vegetables.
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Nutrition and health - Nutrition and health 1.How important...

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