The body needs iron to build a strong immune system. Iron is important for oxidation, or transporting oxygen to the body\’s cells, and it helps produce mitochondria, which provide energy to the body. 2. Pregnant women need more iron. During pregnancy, due to the increased production of red blood cells, expansion of the number of red blood cells and plasma, plus the need for iron by the fetus and placenta, they need more iron than ordinary women. Iron deficiency can make you tired and weak. Severe ischemia can lead to pregnancy complications resulting in poor fetal neurodevelopment or premature birth, infant and