What are the main nutrients found in food

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what are the main nutrients found in food

Science - Human Food & Nutrients - English

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The major nutrients—protein, carbohydrate, and fat—provide the body with energy. This energy keeps your heart beating, your brain active, and your muscles working. The energy is measured in calories. Protein has 4 calories per gram. Provides energy; builds and repairs body cells; part of various enzymes, hormones, and antibodies. Meat, poultry, fish, eggs, beans, lentils, tofu, milk and milk products, grains, seeds and nuts. Carbohydrate has 4 calories per gram.

Nutrients are substances which are essential for the maintenance, repair, growth, and reproduction of all our body tissues. Our foods contain the following basic nutrients: carbohydrates, fats, proteins, and water. Carbohydrates, our body's most efficient source of energy and an essential component in the production of many structural and functional materials, are produced by plants in the process of photosynthesis. They are made of compounds of carbon, hydrogen, and oxygen called sugars or saccharides. Molecules of these simple sugars attach together to make long branching chains that are called complex carbohydrates. These large carbohydrate molecules are also commonly referred to as starch.

In the previous session you learned about nutrition, nutrients, food and food choices. In this session, you will learn about each nutrient in more detail. You will learn about the major categories of nutrients, the main sources of these, their function, and how our body uses each of these nutrients for healthy growth and development. There are seven main classes of nutrients that the body needs. These are carbohydrates, proteins, fats, vitamins, minerals, fibre and water.

Essential nutrients are compounds the body can't make on its own, or in enough quantity. These nutrients must come from food, and they're.
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Food is not a source of nutrients in its original form and is not absorbed into the cells and blood unless first broken down into small blocks. This process-digestion-takes place in the digestive tract, where it is then absorbed by the intestines, transported in the blood stream to each organ, and then taken up into cells. Digestion and absorption begin at the mouth, where food is chewed and swallowed. From there, it moves down the esophagus food pipe to the stomach, where it is thoroughly broken down. Our bodies are built of and powered by solely what we eat and drink.

They are used to build and repair tissues. They help you fight infection. Your body uses extra protein for energy. The protein foods group includes seafood, lean meat and poultry, eggs, beans and peas, soy products, and unsalted nuts and seeds. Protein is also found in the dairy group. Protein from plant sources tends to be lower in saturated fat, contains no cholesterol, and provides fiber and other health-promoting nutrients.

Accessibility Contact Privacy Terms. Nutrition is defined as 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. The diet of an organism is what it eats, which is largely determined by the availability, processing and palatability of foods.



Nutrition Module: 2. Nutrients and their Sources

An essential nutrient is a nutrient that the body cannot synthesize on its own -- or not to an adequate amount -- and must be provided by the diet. - While there are many essential nutrients, they can be broken into two categories: macronutrients and micronutrients.

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