WHY DO WE

FALL ILL?NAME:SYED ANZAR HUSSAIN

BIOLAGY PPT

What is health ?Health is the level of functional or metabolic efficiency of a living organism. In humans, it is the general condition of a person's mind and body, usually meaning to be free from illness, injury or pain]] (as in "good health" or "healthy").

Health is a state of physical, mental and social well being. The conditions necessary for good health are :- i) Good physical and social environment. ii) Good economic conditions.iii) Social equality and harmony. Good physical and social environment includes clean

surroundings, good sanitation, proper garbage disposal and clean drinking water .

Good economic conditions includes job opportunities for all for earning to have nutritious food and to lead a healthy life.

Social equality and harmony are necessary for a healthy and peaceful life.

Healthy Disease free

1. It is a state of physical, mental and social well being.

It is a state of absence from diseases.

2. It refers to the individual, physical and social environment.

It refers only to the individual.

3. The individual has good health. The individual may have good health or poor health.

2) Differences between Healthy and Disease free :-

When a person is affected by a disease either the normal functioning or the appearance of one or more systems of the body changes for the worse.

These changes give rise to signs of the disease called symptoms.

On the basis of the symptoms the physicians look for the signs of a particular disease and conduct tests to confirm the disease.

Maintaining healthAchieving and maintaining health is an ingoing process, shaped by both the evolution of health care knowledge and practices as well as personal strategies and organized interventions for staying healthy known as Lifestyle Management.

The science builds on many sub-fields, including biology, biochemistry, physics, epidemiology, pharmacology, medical sociology. Applied health sciences endeavour to better understand and improve human health through applications in areas such as health education, biomedical engineering, biotechnology and public health.

Role of science in healthHealth science is the branch of science focused on health. There are two main approaches to health science: the study and research of the body and health-related issues to understand how humans (and animals) function, and the application of that knowledge to improve health and to prevent and cure diseases and other physical and mental impairments.

TYPES OF DISEASES.

Acute diseases:Diseases that last for

only very short period of time are called acute

diseases. Acute means brief and severe.

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Other diseases are more long –term, with the symptoms lasting for months or years. Such diseases are called chronic diseases.

CHRONIC DISEASES:

Tuberculosis [ T.B ]

It is an infectious disease.it includes swelling and tenderness of lymph gland often in the legs which may discharge secretion through skin.

Examples of chronic diseases

Elep

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A lower leg and a scrotum showing the effect of elephantiasis.