WebMD does not provide medical advice, diagnosis or treatment.
Physical exercise has established efficacy as an antidepressant in individuals with depression and current medical evidence supports the use of exercise as both a preventive measure against and an adjunct therapy with antidepressant medication for depressive disorders.      A July 2016 meta-analysis concluded that physical exercise improves overall quality of life in individuals with depression relative to controls.  One systematic review noted that yoga may be effective in alleviating symptoms of prenatal depression .  The biomolecular basis for exercise-induced antidepressant effects is believed to be a result of increased neurotrophic factor signaling, particularly brain-derived neurotrophic factor .  
Select topics and stay current with our latest insights
Big data could transform the health-care sector, but the industry must undergo fundamental changes before stakeholders can capture its full value .
Privacy issues will continue to be a major concern. Although new computer programs can readily remove names and other personal information from records being transported into large databases, stakeholders across the industry must be vigilant and watch for potential problems as more information becomes public.