Human Health and Disease Class 12 Notes: Chapter 8
In simple terms, Health can be defined as free from all diseases and infections. According to the World Health Organization (WHO), health is not only the absence of disease or illness. It is a state of an active and energetic condition including the physical, mental, and social well being. A balanced diet and regular exercise play an important role in maintaining a good health of an individual. A disease is an abnormal condition affecting a healthy living organism. It is broadly divided into infectious and non-infectious. Please refer Human Health and Disease Class 12 Notes for more revision notes.
CBSE Revision Notes 