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Television Viewing Time and Inflammatory-Related Mortality
Megan Stacey Grace1, Francis Dillon, Elizabeth L M Barr
11Baker Heart and Diabetes Institute, Melbourne, VIC, AUSTRALIA; 2Department of Physiology, School of Medicine, Nursing and Health Sciences, Monash University, Melbourne, VIC, AUSTRALIA; 3School of Health and Biomedical Sciences, RMIT University, Bundoora, Melbourne, AUSTRALIA; 4Menzies School of Health Research, Darwin, NT, AUSTRALIA; 5Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD; 6Cancer Prevention Fellowship Program, Division of Cancer Prevention, National Cancer Institute, Bethesda, MD; 7Melbourne School of Population and Global Health, University of Melbourne, VIC, AUSTRALIA; 8Swinburne University of Technology, Melbourne VIC, AUSTRALIA; 9School of Public Health, University of Queensland, Brisbane, QLD, AUSTRALIA; 10School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia; and 11Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, VIC, AUSTRALIA.
Excessive television viewing time is linked to a higher risk of death from inflammatory causes. This association holds true even for non-smokers, suggesting TV habits may promote chronic inflammation.
Area of Science:
- Public Health
- Epidemiology
- Chronic Disease Research
Background:
- Television (TV) viewing is a prevalent sedentary behavior linked to adverse health outcomes, including increased mortality from all causes, cardiovascular disease, and cancer.
- While TV time is known to affect inflammatory markers, its specific association with mortality from inflammatory, oxidative, or infectious causes (excluding cancer and cardiovascular disease) remains unclear.
Purpose of the Study:
- To investigate the association between television viewing time and inflammatory-related mortality.
- To examine this relationship specifically in never-smokers, given smoking's inflammatory component.
Main Methods:
- The Australian Diabetes, Obesity and Lifestyle Study cohort, including 8933 adults, was analyzed with a median follow-up of 13.6 years.
- Television viewing time was assessed in relation to noninflammatory and inflammatory-related mortality, with a focus on never-smokers.
Main Results:
- Increased TV time was associated with a higher risk of inflammatory-related mortality in the general population (HR 1.12) and never-smokers (HR 1.18) after adjusting for multiple factors.
- These associations were attenuated after accounting for leisure-time physical activity.
- No significant association was found for noninflammatory mortality in the overall population.
Conclusions:
- Television viewing time is associated with an increased risk of inflammatory-related mortality, independent of cancer and cardiovascular causes.
- The findings support the hypothesis that prolonged TV viewing may contribute to a chronic inflammatory state.
- Leisure-time physical activity may mediate the relationship between TV time and inflammatory-related mortality.
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