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# Study: Vitamin D fights colorectal cancer
- URL: https://www.foodconsumer.org/vitamin_d_fights_colorectal_cancer_0310110634/
- Published: 2011-03-10T19:33:00.000Z
- Updated: 2026-09-22T16:01:00.000Z
- Description: A meta-analysis in Cancer Epidemiology, Biomarkers & Prevention found each additional 100 IU of dietary vitamin D a day was associated with 5% lower colorectal cancer risk across ten studies, with serum vitamin D showing a similar inverse association in six more.
- Author: Food Consumer
- Tags: Vitamins, Nutrition, Vitamin D, Colorectal Cancer, #vivvo-import

A new meta-analysis suggests that taking vitamin D supplements can cut risk of colorectal cancer.

The analysis conducted by Mathilde Touvier of Imperial College London and colleagues found an inverse association between vitamin D and risk of colorectal cancer.

The researchers searched studies on vitamin d and colorectal cancer published prior to 2010 in the medical database Pubmed. Only original, peer-reviewed studies were included in the analysis.

Ten studies showed that each additional 100 IU of dietary vitamin D per day within the range of 39 to 719 IU per day was associated with a 5 percent reduction in the risk of colorectal cancer.

Six studies showed each additional 100 IU of serum vitamin D per liter within the range of 200 to 1800 IU/L was associated with 4 percent reduced risk of colorectal cancer.

Supplementation of vitamin D at the range of 0 to 600 IU per day, total vitamin D intake ranging 79 to 732 IU per day and 25-hydroxyvitamin D status were inversely associated with colon cancer risk.

The findings published in the March 4, 2011 issue of Cancer Epidemiology, Biomarkers & Prevention suggest that vitamin D protects against colorectal cancer.

A [recent study](https://www.foodconsumer.org/vitamin%5Fd%5Fand%5Fbreast%5Fcancer%5F0305111019/) led by two veteran vitamin D researchers suggests one needs to take 4000 to 8000 IU of vitamin per day to have a protection against cancer.

David Liu, Ph.D.