1. Vitamin D has a potential role in preventing colorectal cancer by regulating immune system & inducing anticancer mechanisms.
2. Higher vitamin D levels are associated with a lower risk of colorectal cancer.
3. Supplementation of 2000 IU/day is recommended for adults.
4. A nutrient-dense diet is crucial for reducing CRC risk.
5. Further randomized clinical trials are needed to define optimal supplementation protocols.

Source: Nutrients