Health

World Health Organization (WHO) defined health as "a state of complete physical, mental and social well–being and not merely the absence of disease or infirmity" which was later modified to include the ability to lead a "socially and economically productive life". In the medical field, the technical term for health is homeostasis, an organism's ability to efficiently respond to challenges (stressors) and effectively restore and sustain a "state of balance". Health care is the prevention, treatment and management of illness and the preservation of mental and physical well being through the services offered by the medical, nursing and allied health professionals. Nutrition is the science that studies how what people eat affects their health and performance, foods and dietary supplements that improve performance, promote health, and cure or prevent disease. Diet such as fresh fruits, vegetables, and foods rich in certain fatty acids may foster a healthy immune system, which protects the body from infection, disease, or other unwanted biological invasion. An immune system is a collection of mechanisms within an organism that protects against disease by identifying and killing pathogens and tumor cells. To Know more about Health visit our complete educational  Webportal wonderwhizkids/Biology/Health