Page 29 - Health & Physical edu- 8

Unit
4 Disease

Introduction

The physiological condition in which the body organs or system do not function
properly and uneasiness emerges in the body is called a disease. It is affected by
the location, food habits, cleanliness, personal behaviour and religious or cultural
environment.

A disease is caused by unhealthy behaviour, polluted environment, deficiency of

nutrients and bacterial or viral or parasitic infection in the body. The diseases are
classified into two types. They are: communicable disease and non-communicable
diseases.

Communicable Disease

The disease that can transmit/communicate from one person or animal to the other
by means of various germs is known as a communicable disease.

Preventive measures of communicable diseases

a. Use of Safe Drinking Water

Water is used in everyday activities. It is used for drinking as well. If the water we

drink is not pure or safe, the diseases such as diarrhea, whines, dysentery, cholera,
etc. can easily infect our body. Clean water is needed for taking bath, washing,
cooking, drinking, cleaning, etc.

b. Safe and Balance Diet

Food that is consumed daily must be fresh, hygienic and balanced. Such type of
food helps to develop our physical, mental, social and emotional aspects. Lack
of nutritious food may cause various diseases such as marasmus, wasting, night
blindness, anaemia, etc. Therefore, in order to be safe from various communicable

diseases and malnutrition, the food should consist of all nutrients and it should also
be clean, fresh and hygienic.
Health & Physical Education, Class-8 25