Circulating vitamin D levels and colorectal cancer risk: A meta-analysis and systematic review of case-control and prospective cohort studies.

@article{HernndezAlonso2021CirculatingVD,
  title={Circulating vitamin D levels and colorectal cancer risk: A meta-analysis and systematic review of case-control and prospective cohort studies.},
  author={Pablo Hern{\'a}ndez‐Alonso and Hatim Boughanem and Silvia Canudas and Nerea Becerra-Tom{\'a}s and Mar{\'i}a Fern{\'a}ndez de la Puente and Nancy Babio and Manuel Mac{\'i}as-Gonz{\'a}lez and Jordi Salas-Salvad{\'o}},
  journal={Critical reviews in food science and nutrition},
  year={2021},
  pages={
          1-17
        }
}
The associations between circulating vitamin D concentrations and total and site-specific colorectal cancer (CRC) incidence have been examined in several epidemiological studies with overall inconclusive findings. The aim of this systematic review and meta-analysis of both case-control and prospective cohort studies was to evaluate the association between CRC and circulating levels of vitamin D. The main exposure and outcome were circulating total 25(OH)D and CRC, respectively, in the overall… 
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