Health is the level of useful or metabolic efficiency of a living organism. In humans it is the ability of individuals or communities to adjust and self-manage when facing physical, mental or social challenges. The World Health Organization (WHO) defined health in its broader wisdom in its 1948 constitution as a state of complete physical, mental, and social well-being and not just the absence of disease or illness. This description has been subject to controversy, in particular as lacking operational worth and because of the problem created by use of the word complete. Other definitions have been proposed, among which a recent meaning that correlates health and personal satisfaction. Classification systems such as the WHO Relations of International Classifications, including the International Classification of Functioning, Disability and fitness (ICF) and the International Classification of Diseases (ICD), are commonly used to define and measure the components of health.
Generally, the context in which an individual lives is of great importance for both his health status and value of their life. It is increasingly recognized that health is maintained and improved not just through the advancement and application of health science, but also through the efforts and intelligent lifestyle choices of the individual and culture. According to the World Health Organization, the main determinants of health include the social and financial environment, the physical environment, and the person’s individual characteristics and behaviors.
- Maintaining health
Achieving and maintaining health is an ongoing process, shaped by both the evolution of healthcare information and practices as well as private strategies and organized interventions for staying healthy.
A main way to maintain your personal health is to have a healthy diet. A healthy diet includes a variety of plant-based and animal-based foods that give nutrients to your body. Such nutrients give you energy and keep your body running. Nutrients help make and strengthen bones, muscles, and tendons and also regulate body processes (i.e. blood pressure).
Physical exercise enhances or maintains bodily fitness and overall health and wellness. It strengthens muscles and improves the cardiovascular structure.
Sleep is an essential component to maintaining health. In children, sleep is also vital for growth and progress. Ongoing sleep deprivation has been linked to an increased risk for several chronic health problems. In addition, sleep deprivation has been shown to correlate with both increased susceptibility to illness and slower healing times from illness. In one study, people with chronic insufficient sleep, set as six hours of sleep a night or fewer were found to be four times more likely to catch a cold compared to those who reported sleeping for seven hours or further a night. Due to the role of sleep in regulating metabolism, insufficient sleep can also play a role in weight gain or, conversely, in impeding weight loss. Additionally, in 2007, the International Agency for Research on Cancer, which is the cancer examine agency for the World Health Organization, declared that change work that involves circadian trouble is probably carcinogenic to humans, speaking to the dangers of long-term nighttime work due to its intrusion on sleep.