Colorectal Cancer

  • IARC Vitamin D and Cancer Report concluded that low levels of Vitamin D increase the risk of colorectal cancer
  • Nurses Health Study showed that higher levels of 25(OH)D lower risk factors for colorectal cancer
  • Evidence suggests that higher levels of 25(OH)D can decrease the incidence of colonic polyps  (pre-cancer)
  • A recent limited dose response study showed that there was a 50% risk reduction in colorectal cancer for Vitamin D dose of 1000 IU (25mcg) per day

(16,26,27)