Class 9 Why Do We Fall Ill Notes
Why Do We Fall Ill Notes
Health is a state of complete physical, mental and social well-being.
Necessary conditions for good health
- Personal hygiene
- Good physical and social environment
- Public cleanliness
- Good economic conditions and jobs opportunities
- Social equality and harmony and many more.
→ So, personal and community issues both matter for good health.
Any disturbance in the functioning or the appearance of one or more
systems of the body is referred as disease.
→ Being disease free doesn’t mean being healthy.
→ It is possible to be in poor health without actually suffering from a particular disease.
Symptoms of disease
Symptoms of disease are the things we feel as being ‘wrong’ like headache, cough, loose motions, a wound with pus etc.
Types of diseases
- Acute Diseases
- Chronic Diseases
Differences between acute and chronic diseases
|The diseases that last for only very short periods of time are called acute diseases.
|The diseases that last for long periods of time, even as much as a lifetime are called chronic diseases.
|The patient does not lose weight.
|The patient loses weight.
|The patient does not feel tired all the time.
|The patient feels tired all the time.
|Ex:- Common cold, Influenza etc.
|Ex:- Tuberculosis (TB), Cancer, Diabetes etc.