Health science is the branch of science focused on health , and it includes many subdisciplines . There are two approaches to health science : the study and research of the human body and health - related issues to understand how humans ( and animals ) function , and the use of that knowledge to improve health and to prevent and cure diseases .

Where health knowledge comes from :

           Health research derives knowledge about health from the basic sciences of biology ( which includes many sub branches , some of them are botany ( study of plants ) , zoology ( study of animals ) , anatomy  e.t.c.) ,  chemistry  and physics . Some of the other primarily research - oriented fields that make exceptionally important contributions to health science are biochemistry ( study about chemistry of living organisms ) , epidemiology (study of epidemics) , bacteriology ( study of bacteria )  and genetics ( study of genes in human being ) .

Putting health knowledge to use  :

           After obtaining knowledge from various fields like Biology , Physics , Chemistry and e.t.c . These knowledge has to be put in use for preventing and curing the disease  . Health knowledge like Medicine lead to recovery of  a disease . Some of the fields in which health knowledge to be used with are : nursing ,  nutrition ,  pharmacy ,  public health ,  physical therapy , hospital and medicine . The provision of services to maintain or improve people's health is referred to as health care .