How To Fix Iron Deficiency: A Comprehensive Guide Iron deficiency is the most common nutritional deficiency in the world. Globally, 25–30 % of the population is anemic. Half of these have anemia caused by iron deficiency. 1–2 % of American adults suffer from iron deficiency anemia. According to estimates, as many as 40 % of women have had iron deficiency anemia at some point during their lives. Iron deficiency is especially prevalent in developing countries, where malnutrition and poor nutrition are pervasive. However, also modern diet is to blame, which is often deficient in organ meats, shellfish, and dark green leafy vegetables. Introduction Iron deficiency can result in a weakened immune...