Decreased Production of 1,25-dihydroxyvitamin D

B12 deficiency Copper Deficiency Decreased Production of 1,25-dihydroxyvitamin D Dehydration Dietary Purines Excess Copper Fasting Feeding Difficulties Folate deficiency Folic Acid High Carbohydrate Diet High Oxalate Foods Hypoalbuminemia Increased Vitamin C Iodine Deficiency Iodine Intake Ketogenic Diet Malnutrition Micronutrient deficiency Pellagra Production of 1,25-dihydroxy Vitamin D Refeeding Syndrome Supplements Swallowing Difficulties Thiamine Deficiency Total Parenteral Nutrition Vitamin A Deficiency Vitamin D Deficiency Vitamin D Toxicity Vitamin Deficiency