Hypothesis 1: Patients who are suffering from Crohn's disease are at risk of vitamin D deficiency.~To determine vitamin D status and disease activity in Crohn's disease cases in Canada and Saudi Arabia.~Hypothesis 2: Providing vitamin D in doses higher than RDA (Recommended Dietary Allowance) reduces disease activity in Crohn's disease cases.~To evaluate the impact vitamin D in doses higher than RDA (Recommended Dietary Allowance) on disease activity in Crohn's disease patients.
The purpose for this study is to determine the effect of vitamin D supplementation on disease activity in Crohn's disease patients in Canada and Saudi Arabia