Prospective cohort study on television viewing time and incidence of lung cancer: findings from the Japan Collaborative Cohort Study

Ukawa, Shigekazu; Tamakoshi, Akiko; Wakai, Kenji; Noda, Hiroyuki; Ando, Masahiko; Iso, Hiroyasu

doi:10.1007/s10552-013-0231-z

Cited by 22 publications

(14 citation statements)

References 37 publications

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“…The associations were similar to those in a previous study that reported prolonged daily TV viewing time as a risk factor for lung cancer. 13 COPD is characterized by a chronic abnormal inflammatory response in the lung. 1 Although potential mechanisms underlying the increase in COPD-related mortality with an increase in the average daily TV viewing time remain unclear, we assume that it is the sedentary nature of watching TV.…”

Section: Discussionmentioning

confidence: 99%

“… 9 , 10 Watching TV is a particularly important sedentary behavior 11 that has been related to an increased risk of cardiovascular disease 12 and several cancers, including lung cancer. 13 However, whether it is associated with COPD-related mortality remains unclear. Therefore, we examined the association between the average TV viewing duration per day (daily TV viewing time) and COPD-related mortality in Japanese adults in a large-scale national cohort study.…”

Section: Introductionmentioning

confidence: 99%

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Association Between Average Daily Television Viewing Time and Chronic Obstructive Pulmonary Disease-Related Mortality: Findings From the Japan Collaborative Cohort Study

Ukawa

Tamakoshi

Yatsuya

et al. 2015

Journal of Epidemiology

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BackgroundSedentary behavior is associated with cardiovascular disease, diabetes mellitus, and cancer morbidity, and watching television (TV) is an important sedentary behavior. The aim of this study is to clarify the association between TV viewing time and chronic obstructive pulmonary disease (COPD)-related mortality in Japanese adults.MethodsUsing the Cox proportional hazard model, we assessed COPD-related mortality by TV viewing time in a national cohort of 33 414 men and 43 274 women without cancer, stroke, myocardial infarction, or tuberculosis at baseline (1988–1990).ResultsThe median follow-up was 19.4 years; 244 men and 34 women died of COPD. Men watching ≥4 hours/day of TV were more likely to die of COPD than those watching <2 hours/day (hazard ratio 1.63; 95% confidence interval, 1.04–2.55), independent of major confounders. No association was found in women.ConclusionsAvoiding a sedentary lifestyle, particularly prolonged TV viewing, may help in preventing death from COPD among men.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Association Between Average Daily Television Viewing Time and Chronic Obstructive Pulmonary Disease-Related Mortality: Findings From the Japan Collaborative Cohort Study

Ukawa

Tamakoshi

Yatsuya

et al. 2015

Journal of Epidemiology

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“…We included a non-European study15 in order to estimate the prevalence of sedentary behaviour in lung cancer cases, which may not fully reflect a UK population. Individual studies included in the meta-analyses which were used in this analysis varied in their choice of cut-off values for each category, definition of sedentary behaviour and in the questionnaire used.…”

Section: Discussionmentioning

confidence: 99%

Direct healthcare costs of sedentary behaviour in the UK

Heron

O’Neill

McAneney

et al. 2019

J Epidemiol Community Health

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BackgroundGrowing evidence indicates that prolonged sedentary behaviour increases the risk of several chronic health conditions and all-cause mortality. Sedentary behaviour is prevalent among adults in the UK. Quantifying the costs associated with sedentary behaviour is an important step in the development of public health policy.MethodsNational Health Service (NHS) costs associated with prolonged sedentary behaviour (≥6 hours/day) were estimated over a 1-year period in 2016–2017 costs. We calculated a population attributable fraction (PAF) for five health outcomes (type 2 diabetes, cardiovascular disease [CVD], colon cancer, endometrial cancer and lung cancer). Adjustments were made for potential double-counting due to comorbidities. We also calculated the avoidable deaths due to prolonged sedentary behaviour using the PAF for all-cause mortality.ResultsThe total NHS costs attributable to prolonged sedentary behaviour in the UK in 2016–2017 were £0.8 billion, which included expenditure on CVD (£424 million), type 2 diabetes (£281 million), colon cancer (£30 million), lung cancer (£19 million) and endometrial cancer (£7 million). After adjustment for potential double-counting, the estimated total was £0.7 billion. If prolonged sedentary behaviour was eliminated, 69 276 UK deaths might have been avoided in 2016.ConclusionsIn this conservative estimate of direct healthcare costs, prolonged sedentary behaviour causes a considerable burden to the NHS in the UK. This estimate may be used by decision makers when prioritising healthcare resources and investing in preventative public health programmes.

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“…Several studies have examined sedentary behavior using proxy measures of sitting time such as TV-viewing time in relation to cancer risk [ 7 , 16 – 19 ]. These studies reported an association between sedentary behavior and breast, ovarian cancers, multiple myeloma, colon- and lung cancer risk.…”

Section: Discussionmentioning

confidence: 99%

The associations of sitting time and physical activity on total and site-specific cancer incidence: Results from the HUNT study, Norway

et al. 2018

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BackgroundSedentary behavior is thought to pose different risks to those attributable to physical inactivity. However, few studies have examined the association between physical activity and sitting time with cancer incidence within the same population.MethodsWe followed 38,154 healthy Norwegian adults in the Nord-Trøndelag Health Study (HUNT) for cancer incidence from 1995–97 to 2014. Cox proportional hazards regression was used to estimate risk of site-specific and total cancer incidence by baseline sitting time and physical activity.ResultsDuring the 16-years follow-up, 4,196 (11%) persons were diagnosed with cancer. We found no evidence that people who had prolonged sitting per day or had low levels of physical activity had an increased risk of total cancer incidence, compared to those who had low sitting time and were physically active. In the multivariate model, sitting ≥8 h/day was associated with 22% (95% CI, 1.05–1.42) higher risk of prostate cancer compared to sitting <8 h/day. Further, men with low physical activity (≤8.3 MET-h/week) had 31% (95% CI, 1.00–1.70) increased risk of colorectal cancer (CRC) and 45% (95% CI, 1.01–2.09) increased risk of lung cancer compared to participants with a high physical activity (>16.6 MET-h/week). The joint effects of physical activity and sitting time the indicated that prolonged sitting time increased the risk of CRC independent of physical activity in men.ConclusionsOur findings suggest that prolonged sitting and low physical activity are positively associated with colorectal-, prostate- and lung cancer among men. Sitting time and physical activity were not associated with cancer incidence among women. The findings emphasizing the importance of reducing sitting time and increasing physical activity.

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Prospective cohort study on television viewing time and incidence of lung cancer: findings from the Japan Collaborative Cohort Study

Cited by 22 publications

References 37 publications

Association Between Average Daily Television Viewing Time and Chronic Obstructive Pulmonary Disease-Related Mortality: Findings From the Japan Collaborative Cohort Study

Association Between Average Daily Television Viewing Time and Chronic Obstructive Pulmonary Disease-Related Mortality: Findings From the Japan Collaborative Cohort Study

Direct healthcare costs of sedentary behaviour in the UK

The associations of sitting time and physical activity on total and site-specific cancer incidence: Results from the HUNT study, Norway

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