Nutrients, Classification And Functions

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Food is anything consumed or drunk that provides energy, helps in building the body, regulates body functions, and protects against diseases. It includes nutrients like carbohydrates, proteins, fats, …

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The three main functions of food are: 1. Physiological (energy giving, body building, protective and regulatory), 2. Psychological (emotional satisfaction), and 3. Social (sharing meals, cultural acce…

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Rice is an energy-giving food because it is rich in carbohydrates, which provide 4 kcal per gram when digested.

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Proteins help in building and repairing body tissues like muscles, skin, and organs. They are made of amino acids, which are the building blocks of the body. For example, milk and eggs help children g…

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Fat gives the highest energy — 9 kilocalories per gram — compared to carbohydrates and proteins, which give 4 kcal per gram.

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Fats help absorb fat-soluble vitamins like A, D, E, and K. For example, eating carrots with a little oil helps the body absorb vitamin A better.

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Pulses (like lentils) and nuts (like peanuts) are good sources of plant-based proteins. These are incomplete proteins but still important for body repair.

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Macronutrients are nutrients needed in large amounts. They include carbohydrates, proteins, fats, and water. These provide energy and help build and maintain the body.