Research
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The association between sedentary TV viewing and young-onset CRC is more pronounced for rectal cancer.
Awareness of increased rectal cancer risk with high TV viewing may inform screening and lifestyle recommendations.
StrongSupportsmedium confidence
This association was observed among participants without a CRC family history and was more pronounced for rectal cancer (RR for >14 vs ≤7 hours per week 2.44, 95% CI = 1.03 to 5.78, Ptrend = .04).
Why this rating
Based on the prospective evaluation of a large cohort.
Source
Sedentary Behaviors, TV Viewing Time, and Risk of Young-Onset Colorectal Cancer
Long H. Nguyen et al. · JNCI Cancer Spectrum · 2018
DOI 10.1093/jncics/pky073
cohort · n=89278Cited 190×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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