5th Class Science Human Body and their Needs Human body (Food and health)

Human body (Food and health)

Category : 5th Class

Human body (Food and health)



  • The food that we eat contains five main components: carbohydrates, fats, proteins, vitamins, and

Table showing food components, sources and their functions 


Food components




Rice, wheat, sugar, potato

Energy giving foods


Oil, butter, ghee, milk, cheese

Energy giving foods


Eggs, meat, fish, milk, pulses

Body building foods


Fruits and vegetables

Protective foods


Fruits, vegetables, milk, eggs

Protective foods


Cereals, fresh vegetables, fruits and salads

Prevent constipation



  • A diet that contains adequate amount of different components of food required for the healthy functioning of our body is called a balanced diet.


  • A disease is a state in which a function or a part of the body is no longer in a healthy condition.


  • Diseases are of two types - non-communicable and


  • Non-communicable disease are those that do not spread from one person to another.


  • Deficiency diseases - deficiency of a particular food, vitamin or mineral causes deficiency diseases.


Name of the deficiency disease

Caused by the deficiency of

Food containing the vitamin/ mineral

Night blindness

Vitamin A

Green leafy vegetables, papaya, carrot,



mango, milk, butter, and egg yolk


Vitamin B1

Milk, peas, cereals, and green vegetables


Vitamin D

Milk and milk products


Vitamin C

Amla, orange, lemon, and tomato



Iodized salt



Spinach, apple, guava, brinjal, and meat


  • Communicable disease are those that can spread from one person to another. They are spread by germs.


Tit bits


Tit bits


  • Vitamins are essential to your health but are only needed in tiny quantities. For example you need about 0.001 g (0.0003 oz) of vitamin B1, thiamine, each day. It only amounts to 28 g (1 oz) in your whole lifetime but without it your heart and nervous system will not function properly. About 12 vitamins are essential to health.

A lifetime's supply of all the vitamins you need only weighs about 250 g (8 oz)   


Table showing the types of germs, diseases caused and the mode of transmission.


Types of germs

Diseases caused

Mode of transmission


Cholera and typhoid Tuberculosis

Water Air


Common cold, flu, viral fever, measles and mumps



Dysentery Malaria

Water Insect bites



Direct contact


  • We can protect ourselves from diseases like polio, diphtheria, whooping cough, tetanus and tuberculosis by getting vaccinated. We should keep our bodies healthy as a healthy body can fight off many diseases.


  • We should keep our surroundings clean. We should not let stagnant water breed mosquitoes as they spread malaria. Garbage should be removed promptly. People should be educated about health care,


  • People suffering from diarrhea should be given a solution of water, sugar and salt.


Notes - Human Body (Food and Health)

You need to login to perform this action.
You will be redirected in 3 sec spinner