Introduction to Public Health

 Definition of Health

Health refers to a state of overall physical, mental, and social well-being in which an individual is not only free from illness or disease but also possesses the ability to function effectively in daily life. 

According to WHO in 1948, health can be defined as a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.

It's a state of complete harmony and balance encompassing various aspects of one's life, including physical fitness, mental wellness, emotional stability, social connections, and the capability to adapt to life's challenges. Health is not merely the absence of illness, but a condition where an individual experiences optimal physical and mental conditions, allowing for a fulfilling and productive life.

Definition of Public Health

Public health refers to the collective efforts and actions taken to safeguard and improve the health and well-being of communities and populations. It focuses on preventing diseases, promoting healthy living, and prolonging life expectancy by implementing various strategies and interventions. 

The best definition of public health is the science and art of preventing disease, promoting health and prolonging life through organized community effort by the society.

Public health involves a multidisciplinary approach that encompasses a wide range of activities, policies, and initiatives aimed at ensuring optimal health for entire populations rather than just individuals.