What are nutrition and why is it important for health



All those substances which are necessary for the operation and performance of various biological activities towards the organisms are called nutrition. There are 4 types of nutritional substances.

There are 4 types of nutritional substances
  • Energy production
  • Metabolic Controller
  • Growth and building materials
  • Genetic material
1. Energy production
Nutrients that generate energy, energy producing substances like fats, carbohydrates.
2. Metabolic Controller
Nutrients that control various metabolic functions of the body.
3. Growth and building materials
Nutrients, which correct and growth and wear and tear of the body (proteins).
4. Genetic material
Nutrients that help to carry genetic properties from one generation (nucleic acid). It is very important for the physical development of mankind, functioning, immunity of the body, to heal the broken body and all the organisms like.
  • Carbohydrate
  • Protein
  • Fat
  • Vitamins
  • Water
  • Nucleic acid
  • Mineral salts

1. Carbohydrate

A. ) Carbohydrates are a mixture of three substances, carbon, hydrogen, and oxygen.
B. ) The energy requirement of the body 60 to 80% of the energy met by carbohydrates. 2 grams of glucose yields 8.4 grams of energy.

What is the type of carbohydrate?

1. Monosaccharide
Monosaccharides are the simplest form of carbohydrates ( glucose, mannose, triose )

2. Disaccharide
Disaccharides mixing two molecules.
3. Polysaccharide
The addition of several molecules of monosaccharide produces long-chain insoluble polysaccharide. Found in the outer skeleton and cellulose of the arthropoda starch glycogen polysaccharide.

What is the function of carbohydrates?
  1. Producing Vitamin C through carbohydrates.
  2. Producing nucleic acid.
  3. To fulfill the energy requirement of the body.
  4. Creating the outer body of animals.
  5. Converting calories into energy.
  6. Make food an energy and powerful in the body.

What is the source of carbohydrates?
Potatoes, peas, maize, millet, wheat, rice, sweet potatoes, sugar beets, turnips, pineapples etc.

2. Protein

About 20% of the human body is made up of protein. Nitrogen is present in all proteins. Protein is responsible for the production of energy. Proteins are produced in the human body in two ways.

  1. Production of proteins by the body 2. Protein comes from certain foods.
1. What is the source of protein?
Lentils, peanuts, soybeans, gram, lentils, wheat, fish, meat, milk, egg, fort, butter etc.
2. What is the type of protein?

1. Simple Protein

Protein made up of only amino acids (globulin).

2. Conjugated Proteins

Proteins whose molecules associated groups.

3. Derived Proteins

Protein made (natural peptides).

What is the function of protein?

  1. Cells, organisms, participate in the formation of tissues.
  2. Proteins physical development (kwashiorkar, marasmus).
  3. Protein provides energy to the body.
  4. Gene (genetic) creates the development of symptoms.
  5. It acts as convection.

3. Fat

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Fat is an ester of glycerol and fatty acids, fat contains all elements of carbon, hydrogen, oxygen and 1 gram of fat produces about 9.4 kcal of energy which is more beneficial for the body.
1. What is the source of fat?
Lentils, cereals, fruits, vegetables, meat, gram, peanuts, cottage cheese, fish etc.
2. What is the function of fat?
  1. Energy and strength to the body.
  2. It does not let the body heat out by depositing under the skin.
  3. It makes food taste and delicious.
  4. Prevents injury to various parts of the body.
  5. Don’t let sweat get out.
  6. Fat makes all parts of the body fat and fat.
  7. Lack of fat causes body development and weight loss.
  8. Heart disease and blood pressure increases.

4. Vitamins

Vitamin is a type of organic compound.

  • Vitamin is of two types based on solubility
  • Water Soluble Vitamin – Vitamin B and C
  • Soluble vitamins in fat and organic solutions – Vitamin A and Vitamin D, Vitamin E and Vitamin K etc.

Vitamin A

A.) Strengthen the eyes, skin, bone, berry-berry, immunity.
1. What is the source of Vitamin A ?
Milk, eggs, fish, green vegetables, cottage cheese, spinach, lentils, fruits source of Vitamin A.
2. Which disease vitamin A deficiency?
Night blindness, Beri-beri, skin disease, virus disease etc.
3. Vitamin B1 to B12
Vitamin B1 to B12 prevention from all diseases of the skin, red eyes, pellagra, hair white, anemia, dermatitis, paralysis, retardation, hair loss, skin rash, dysentery, body pain etc.
4. What is the source of vitamin B1 to B12 ?

Meat, milk, eggs, fish, yeast, green vegetable, beans, fruits, pomegranate, watermelon, peanuts, chickpea, spinach etc.
5. Vitamin B1 to B12 deficiency disease
Skin, red eyes, pellagra, hair white, anemia, dermatitis, paralysis, retardation, hair loss, skin rash, dysentery, body pain are all diseases.

Vitamin C

Vitamin C prevention from scurvy disease, skin rash, skin blackening.

1. What is the source of Vitamin C ?
Lemon, orange, tomato, gooseberry , gram etc.
2. Vitamin C deficiency disease
Scurvy, gingivitis, skin diseases etc.

Vitamin D

Rickets provide protection from bone disease vitamin D.
1. What is the source of Vitamin D ?
Fish, milk, oil, eggs, sun rays.
2. Vitamin D deficiency diseases
Rickets children’s disease, bone weakening.

Vitamin E

Strengthen fertility, remove impotence, increase stamina etc.
1. What is the source of Vitamin E ?
Green Vegetable, Milk, Fish, Egg, Wheat, Pomegranate, Watermelon, Groundnut, Gram, Spinach , beetroot etc.
2. Vitamin E deficiency disease
Weakened reproductive power, impotence, reduced stamina.

Vitamin K

Help with blood clotting.
1. What is the source of Vitamin K ?
Tomatoes, green vegetable spinach, milk, fish, eggs.
2. What is vitamin K deficiency disease?
No blood clotting, clotting, bleeding.

5. Water

Water is very important for everyone. The water content in the human body is about 70-80% water. Water is a mixture of two chemical substances (hydrogen and oxygen). Drink water to overcome lack of thirst. Water is also a good source of disease free.
What is the function of water?
  1. Water regulates body temperature.
  2. Water excretes the residual substance of the body.
  3. The dirt of the body comes out through sweat.
  4. Gets vitamins and relieves thirst.

6. Nucleic acid

Nucleic acids carbon, hydrogen, nitrogen, phosphorus.
What is the function of nucleic acid?
  1. Gene alteration
  2. Control of saliva formation and protein.
  3. Creating Chromatin Water.
  4. RNA and DNA cell protection.

7. Nutrition

Balanced nutrition

The nutrients that contain all the nutrients required by a living human being are called balanced nutrition.
And their view is that a balanced diet depends on the age, sex, body development and health of the person, which normally a man needs 3500 calories to work and a woman needs 3000 calories to work.
What is the source of balanced nutrition?
Pulses, rice, peas, barge, maize, vegetable spinach, milk, jaggery, sugar, fat, oil, fish, poultry, oranges, apples, pomegranate, guava, egg all provide balanced calorie energy with balanced diet.


  1. Men and women who do normal work need different types of calorie energy like- 2500 kcal for male and 2000 kcal energy for female to work.
  2. If a woman needs 2500 calories to do 8 hours of work and 3000 calories for a man.
  3. The overworked man and woman need different calorie energy like – man needs 3600 calories and woman needs 3200 calories of energy.

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