This is an interesting study...
On the one hand, one can say that obviously TV viewing time is time not spent in health-preserving activities...it's intuitive, duh...but on the
other hand, this study makes it seem like there's more to it than that...
The link is to oxfordjournals.org...the article was originally published in the International Journal of Epidemiology
dated June 23, 2010, the
authors are Katrien Wijndaele, Søren Brage, Hervé Besson, Kay-Tee Khaw, Stephen J Sharp, Robert Luben, Nicholas J Wareham and Ulf Ekelund...
(I'm just going to cite from the abstract + introduction + discussion sections...click on through for the rest such as methods, results, references
Television viewing time independently predicts all-cause and cardiovascular mortality:
the EPIC Norfolk Study
...Television viewing (TV), a highly prevalent behaviour, is associated with higher cardiovascular risk independently of physical activity. The
relationship with mortality, however, is relatively unknown.
...We examined the prospective relationship between TV time and all-cause, cardiovascular and cancer mortality in a population-based cohort [The
European Prospective Investigation into Cancer and Nutrition (EPIC), Norfolk] of 13 197 men and women [age [SD (standard deviation)]: 61.5 ± 9.0
years]. Participants were free from stroke, myocardial infarction and cancer at baseline in 1998–2000 and were followed up for death ascertainment
until 2009 (9.5 ± 1.6 years). TV time, total physical activity energy expenditure (PAEE), education level, smoking status, alcohol consumption,
anti-hypertensive and lipid-lowering medication use, participant and family history of disease and total energy intake were self-reported; height and
weight were measured by standardized procedures. Hazard ratios (HRs) [95% confidence interval (CI)] for mortality were estimated per 1-h/day increase
...Each 1-h/day increase in TV time was associated with increased hazard of all-cause (HR = 1.04, 95% CI = 1.01–1.09; 1270 deaths) and
cardiovascular (HR = 1.07, 95% CI = 1.01–1.15; 373 deaths), but not cancer mortality (HR = 1.04, 95% CI = 0.98–1.10; 570 deaths). This was
independent of gender, age, education, smoking, alcohol, medication, diabetes history, family history of cardiovascular disease and cancer, body mass
index (BMI) and PAEE. They were similar when stratified by gender, age, education, BMI and PAEE. The population-attributable fraction for all-cause
mortality comparing the highest TV tertile (>3.6 h/day) with the lowest ( extra DIV