Health psychology, developed in the late 1970s, is its own domain of inquiry. Also called a medical psychologist, the health psychologist helps individuals explore the link between emotions and physical health. The health psychologist also helps physicians and medical professionals understand the emotional effects of a patient’s illness or disease. They practice in the areas of chronic pain management, oncology, physical rehabilitation, addiction treatment, eating disorders, and others. This professional can be found in clinics, hospitals, private practice, and public health agencies. Some also work in corporate settings to promote health and wellness among employees, engaging in workplace policies and decision-making.

healthy, sound, wholesome, robust, hale, well mean enjoying or indicative of good health. healthy implies full strength and vigor as well as freedom from signs of disease. a healthy family sound emphasizes the absence of disease, weakness, or malfunction. a sound heart wholesome implies appearance and behavior indicating soundness and balance. a face with a wholesome glow robust implies the opposite of all that is delicate or sickly. a lively, robust little boy hale applies particularly to robustness in old age. still hale at the age of eighty well implies merely freedom from disease or illness. she has never been a well person
Having that kind of control over your heart health is particularly welcome news right now, with cardiovascular disease remaining the number-one killer of both men and women. A recent CDC report revealed that “largely preventable” heart problems killed around 415,000 Americans in 2016. Under its Million Hearts campaign—which aims to prevent 1 million heart attacks and strokes by 2022—the CDC identified approximately 2.2 million hospitalizations and 415,000 deaths from heart attacks, strokes, heart failure and related conditions in 2016 that likely could have been avoided.
Believe it or not, “stress can increase your risk of heart disease 2.5-fold—similar to smoking and diabetes,” says Gianos. That’s because chronic stress puts the body into constant fight-or-flight mode, triggering inflammation, high blood pressure and other unhealthy changes. But mindfulness can be a powerful antidote to that modern state of overload. By focusing on our thoughts and sensations, we can learn to control our body’s response to stress.
Mental illness is described as 'the spectrum of cognitive, emotional, and behavioral conditions that interfere with social and emotional well-being and the lives and productivity of people. Having a mental illness can seriously impair, temporarily or permanently, the mental functioning of a person. Other terms include: 'mental health problem', 'illness', 'disorder', 'dysfunction'.[38]

The meaning of health has evolved over time. In keeping with the biomedical perspective, early definitions of health focused on the theme of the body's ability to function; health was seen as a state of normal function that could be disrupted from time to time by disease. An example of such a definition of health is: "a state characterized by anatomic, physiologic, and psychological integrity; ability to perform personally valued family, work, and community roles; ability to deal with physical, biological, psychological, and social stress".[7] Then in 1948, in a radical departure from previous definitions, the World Health Organization (WHO) proposed a definition that aimed higher: linking health to well-being, in terms of "physical, mental, and social well-being, and not merely the absence of disease and infirmity".[8] 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. For a long time, it was set aside as an impractical ideal and most discussions of health returned to the practicality of the biomedical model.[9]