Health model is a complex concept that is gives the explanations and relationship between the health and illness or injury. Medical Definition of Health Medical Author: Melissa Conrad Stöppler, MD Health: As officially defined by the World Health Organization, a state of complete physical, mental, and social well-being, not merely the absence of disease or infirmity. Global life expectancy then was approximately 48 for men and 53 … The American Public Health Association defines public health nursing as, "the practice of promoting and protecting the health of populations using knowledge from nursing, social, and public health sciences". Yet what differentiates these two words from one another are the beginning letters – WE versus I. Psychiatric nursing or mental health nursing is the appointed position of a nurse that specialises in mental health, and cares for people of all ages experiencing mental illnesses or distress.These include: schizophrenia, schizoaffective disorder, mood disorders, anxiety disorders, personality disorders, eating disorders, suicidal thoughts, psychosis, paranoia, and self-harm. “Nursing is a dynamic profession with three major foci: health promotion and prevention of illness, providing care for those who need professional assistance to achieve their optimal level of health and functioning, and research to enhance the knowledge base for providing excellent nursing care.” Wellness is defined as the state or condition of being in good physical and mental health; Illness is a disease or period of sickness affecting the body or mind. It covers a wide range of social and environmental interventions that are designed to benefit and protect individual people’s health and quality of life by addressing and preventing the root causes of ill health, not just focusing on treatment and cure. Seventy years ago, the WHO definition of health was a powerful clarion call to international action. 2. Belloc & L. Breslo, 1972) In an era of increasing challenges for public health, nurses have the potential to make a dramatic difference. Mental health is important at every stage of life, from childhood and adolescence through adulthood. It is fundamental assumption in nursing theory that it is important for nurses to understand how patients experience states of ill health. World Health Organization defines health as a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity. Over the course of your life, if you experience mental health problems, your thinking, mood, and behavior could be affected. The most widely accepted definition of health was set out in the Preamble to the Constitution of the World Health Organization (WHO) in 1946. WHO encourages an holistic concept of health, defining health as ‘a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity’ (WHO 1946). 1. Looking at the spelling of these two words, the letters in common are the ones at the end. Health promotion enables people to increase control over their own health. ease (dĭ-zēz′) n. 1. Although this definition was welcomed by some as being innovative, it was also criticized as being vague, excessively broad and was not construed as measurable - Public Health An abnormal condition of a part, organ, or system of an organism resulting from various causes, such as infection, inflammation, environmental factors, or genetic defect, and characterized by an identifiable group of signs, symptoms, or both. Clinical model (M.B. These models can be helpful in assign the need of health and wellness. A condition or tendency, as of society, regarded as abnormal and harmful. Many factors contribute to mental health problems, including: Biological factors, such as genes or brain chemistry