Mixed
High levels of sedentary behavior, specifically television viewing time, are associated with a significantly increased risk of colon cancer compared to low levels of sedentary time.
If you watch a lot of television, be aware that this habit is linked to a higher risk of colon cancer. This risk is distinct from your exercise routine, meaning that even if you work out, spending many hours sitting and watching TV may still increase your risk. Try to limit continuous viewing time and take breaks to stand or move.
Comparing the highest vs lowest levels of sedentary time, the relative risks (RRs) for colon cancer were 1.54 (95% confidence interval [CI] = 1.19 to 1.98) for TV viewing time...
Why this rating
Meta-analysis of 43 observational studies with large sample size (68,936 cases), though observational design limits causal inference.
Source
Television Viewing and Time Spent Sedentary in Relation to Cancer Risk: A Meta-Analysis
Daniela Schmid et al. · JNCI Journal of the National Cancer Institute · 2014
DOI 10.1093/jnci/dju098
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- High levels of sedentary behavior, specifically television viewing time, are associated with a significantly increased risk of lung cancer compared to low levels of sedentary time.Moderate
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