Determinants of health

See also: Social determinants of health and Risk factor

Generally, the context in which an individual lives is of great importance on health status and quality of life. It is increasingly recognized that health is maintained and improved not only through the advancement and application of health science, but also through the efforts and intelligent lifestyle choices of the individual and society. According to the World Health Organization, the main determinants of health include the social and economic environment, the physical environment, and the person's individual characteristics and behaviors.

More specifically, key factors that have been found to influence whether people are healthy or unhealthy include:
  1.     Income and social status
  2.     Social support networks
  3.     Education and literacy
  4.     Employment/working conditions
  5.     Social environments
  6.     Physical environments
  7.     Personal health practices and coping skills
  8.     Healthy child development
  9.     Biology and genetics
  10.     Health care services
  11.     Gender
  12.     Culture

An increasing number of studies and reports from different organizations and contexts examine the linkages between health and different factors, including lifestyles, environments, health care organization, and health policy - such as the 1974 Lalonde report from Canada; the Alameda County Study in California; and the series of World Health Reports of the World Health Organization. For example, analysis of results from the Alameda County Study suggests that people can improve their health via exercise, enough sleep, maintaining a healthy body weight, limiting alcohol use, and avoiding smoking. The WHO series of World Health Reports focuses on global health issues, including access to health care and improving public health outcomes, especially in developing countries.

The environment is often cited as an important factor influencing the health status of individuals. This includes characteristics of the natural environment, the built environment, and the social environment. Factors such as clean water and air, adequate housing, and safe communities and roads all have been found to contribute to good health, especially the health of infants and children. Some studies have shown that a lack of neighborhood recreational spaces including natural environment leads to lower levels of personal satisfaction and higher levels of obesity, linked to lower overall health and well being. This suggests the positive health benefits of natural space in urban neighborhoods should be taken into account in public policy and land use.

Genetics, or inherited traits from parents, also play a role in determining the health status of individuals and populations. This can encompass both the predisposition to certain diseases and health conditions, as well as the habits and behaviors individuals develop through the lifestyle of their families - also referred to as the "nature versus nurture" debate, in other words the role of factors which can or cannot be controlled. For example, genetics may play a role in the manner in which people cope with stress, either mental, emotional or physical.