Iron (for At-Risk Populations)

Iron deficiency is the most common nutritional deficiency globally, affecting 1.6 billion people, with menstruating women, pregnant women, and vegans at highest risk. Supplementation with 18-27mg elemental iron as ferrous bisglycinate minimizes gastrointestinal side effects while restoring ferritin stores. However, men and postmenopausal women should only supplement if testing confirms deficiency, as excess iron causes oxidative damage.