Sleep is an essential component to maintaining health. In children, sleep is also vital for growth and development. Ongoing sleep deprivation has been linked to an increased risk for some chronic health problems. In addition, sleep deprivation has been shown to correlate with both increased susceptibility to illness and slower recovery times from illness.[43] In one study, people with chronic insufficient sleep, set as six hours of sleep a night or less, were found to be four times more likely to catch a cold compared to those who reported sleeping for seven hours or more a night.[44] Due to the role of sleep in regulating metabolism, insufficient sleep may also play a role in weight gain or, conversely, in impeding weight loss.[45] Additionally, in 2007, the International Agency for Research on Cancer, which is the cancer research agency for the World Health Organization, declared that "shiftwork that involves circadian disruption is probably carcinogenic to humans," speaking to the dangers of long-term nighttime work due to its intrusion on sleep.[46] In 2015, the National Sleep Foundation released updated recommendations for sleep duration requirements based on age and concluded that "Individuals who habitually sleep outside the normal range may be exhibiting signs or symptoms of serious health problems or, if done volitionally, may be compromising their health and well-being."[47]
Vient ensuite la question de la prévention. Olivier Geffard, directeur de recherche de l'unité RiverLy a pour mission la surveillance chimique des milieux aquatiques, “dans l'objectif de s'assurer du maintien de la santé des écosystèmes aquatiques”. Cette surveillance repose sur la mesure des taux de micropolluants (hydrocarbures, pesticides, etc.) sur certaines zones aquatiques, à l'aide de l'étude de l'intérieur des organismes vivants dans ces zones, qui concentrent les contaminants. “Cette approche du biologique permet une meilleure caractérisation de la contamination chimique de l'eau [par rapport à une analyse du taux de polluants dans un volume d'eau]”, explique Olivier Geffard.
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The National Center for Chronic Disease Prevention and Health Promotion (NCCDPHP) supports awardees in all 50 states and the District of Columbia. Awardees include large and small cities and counties, tribes, tribal organizations, and national and community organizations. These awards support cross-cutting programs to prevent and control chronic diseases and improve community health. Find information below about current and past community health programs.
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. For example, genetics may play a role in the manner in which people cope with stress, either mental, emotional or physical. For example, obesity is a significant problem in the United States that contributes to bad mental health and causes stress in the lives of great numbers of people.[27] (One difficulty is the issue raised by the debate over the relative strengths of genetics and other factors; interactions between genetics and environment may be of particular importance.)
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Generally, the context in which an individual lives is of great importance for both his 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.[13]
Prolonged psychological stress may negatively impact health, and has been cited as a factor in cognitive impairment with aging, depressive illness, and expression of disease.[56] Stress management is the application of methods to either reduce stress or increase tolerance to stress. Relaxation techniques are physical methods used to relieve stress. Psychological methods include cognitive therapy, meditation, and positive thinking, which work by reducing response to stress. Improving relevant skills, such as problem solving and time management skills, reduces uncertainty and builds confidence, which also reduces the reaction to stress-causing situations where those skills are applicable.
Since the late 1970s, the federal Healthy People Initiative has been a visible component of the United States’ approach to improving population health.[6][7] In each decade, a new version of Healthy People is issued,[8] featuring updated goals and identifying topic areas and quantifiable objectives for health improvement during the succeeding ten years, with assessment at that point of progress or lack thereof. Progress has been limited to many objectives, leading to concerns about the effectiveness of Healthy People in shaping outcomes in the context of a decentralized and uncoordinated US health system. Healthy People 2020 gives more prominence to health promotion and preventive approaches and adds a substantive focus on the importance of addressing social determinants of health. A new expanded digital interface facilitates use and dissemination rather than bulky printed books as produced in the past. The impact of these changes to Healthy People will be determined in the coming years.[9]
L'objectif du concept One Health, illustré par ces différents travaux en cours au sein de l'Inrae, est simple : “produire des connaissances et éclairer dans leur prise de décisions l'ensemble des acteurs concernés par ces enjeux de santé publique”.  A l'automne prochain, l'Institut fera un nouveau point, cette fois-ci concentré sur les substances toxiques se retrouvant dans notre chaîne alimentaire.
The premise of body cleansing is based on the Ancient Egyptian and Greek idea of autointoxication, in which foods consumed or in the humoral theory of health that the four humours themselves can putrefy and produce toxins that harm the body. Biochemistry and microbiology appeared to support the theory in the 19th century, but by the early twentieth century, detoxification based approaches quickly fell out of favour.[6][7] Despite abandonment by mainstream medicine, the idea has persisted in the popular imagination and amongst alternative medicine practitioners.[8][9][10] In recent years, notions of body cleansing have undergone something of a resurgence, along with many other alternative medical approaches. Nonetheless, mainstream medicine continues to view the field as unscientific and anachronistic.[9]
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