Vitamin D deficiency: what the blood number means Wild Foods Editorial Team · Updated October 13, 2026 · Sources checked October 13, 2026 Vitamin D deficiency, on the NIH fact sheet, is a serum 25-hydroxyvitamin D level below 30 nmol/L,...
Abstract Summary Objective To determine the safety and physiological benefits of co-administering magnesium and vitamin D. Context Vitamin D deficiency is widespread, and magnesium deficiency may impair vitamin D utilization despite adequate intake. Methods Used Approach Nutritional intervention studies analyzed...