title: Physical activity: the health benefits outweigh the risks.
abstract: OBJECTIVE
  This article will summarize the current findings on the effects of physical activity on human health and well-being.
  
  
  RESULTS
  Physical activity is associated with enhanced health and reduced risk of all-cause mortality such as cardiovascular disease, hypertension, type 2 diabetes, obesity, osteoporosis, sarcopenia, cognitive disorders, and some forms of cancer. Nevertheless, the effects of exercise with respect to potential health consequences are complex. When untrained or previously sedentary persons undertake vigorous exertion suddenly, the undesired side effects of injuries, dehydration or cardiac arrest are amplified.
  
  
  CONCLUSIONS
  It is reasonable to conclude that the risk exposure through physical activity is outweighed by its overall benefits, and health authorities strongly encourage participation in moderate intensity physical activity on a daily basis. In the future, the identification and characterization of particularly inactive sub-groups of the population may facilitate and optimize the planning of public health interventions.
authors.affiliation: Division of Clinical Nutrition, Geneva University Hospital, Geneva, Switzerland.
authors.forename: Katarina
authors.initials: K
authors.lastname: Melzer
authors.forename: Bengt
authors.initials: B
authors.lastname: Kayser
authors.forename: Claude
authors.initials: C
authors.lastname: Pichard
mesh_terms: D002908:Chronic Disease / Q000453:epidemiology* / Q000401:mortality; D015444:Exercise / Q000502:physiology*; D006304:Health Status; D006801:Humans; D012307:Risk Factors