Can Vitamin D Reduce My Risk of Colorectal Cancer?

Can vitamin D reduce my risk of colorectal cancer? 
Kimmie Ng, MD, MPH, medical oncologist at Dana-Farber Cancer Institute, helps answer the common question: Can vitamin D reduce my risk of colorectal cancer? 
Clinical trials have not shown that taking a supplement can reduce the risk of developing colorectal cancer. However, high doses of vitamin D may help to slow the progression of colorectal cancer in diagnosed patients.  
Want to learn more from Dana-Farber about colorectal cancer screening, risk, and prevention? Visit: https://www.dana-farber.org/cancer-care/treatment/gastrointestinal/programs/colorectal-cancer