Circulating Vitamin D and Colorectal Cancer Risk: An International Pooling Project of 17 Cohorts

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J Natl Cancer Inst. 2018 Jun 14. doi: 10.1093/jnci/djy087. [Epub ahead of print]

Circulating Vitamin D and Colorectal Cancer Risk: An International Pooling Project of 17 Cohorts

CONCLUSIONS:

Higher circulating 25(OH)D was related to a statistically significant, substantially lower colorectal cancer risk in women and non-statistically significant lower risk in men. Optimal 25(OH)D concentrations for colorectal cancer risk reduction, 75-100 nmol/L, appear higher than current IOM recommendations.