Health is a positive concept emphasizing social and personal resources, as well as physical capacities." Focusing more on lifestyle issues and their relationships with functional health, data from the Alameda County Study suggested that people can improve their health via exercise, enough sleep, spending time in nature, maintaining a healthy body weight, limiting alcohol use, and avoiding smoking.
The environment is often cited as an important factor influencing the health status of individuals.
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".
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".
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.
Beverage taxes came into light with increasing concerns about obesity, particularly among youth.
Sugar-sweetened beverages have become a target of anti-obesity initiatives with increasing evidence of their link to obesity.
Applications with regard to animal health are covered by the veterinary sciences.
The term "healthy" is also widely used in the context of many types of non-living organizations and their impacts for the benefit of humans, such as in the sense of healthy communities, healthy cities or healthy environments.