The Iron in the diet is absorbed via small intestine & it is then stored in the liver. It functions as a vital enzyme cofactor for the expression & activation of various metabolic enzymes in our body. It is the fundamental mineral required for the formation of red blood cells in our body. The red blood cells carry & transport oxygen to all tissues & organs of the body. Iron deficiency & iron deficiency anemia is suspected to be an important contributory factor in diminished fertility in women. It is one of the most important deficiencies commonly identified in subfertile women. Iron deficiency & iron deficiency anemia negatively affect ovarian follicle development, maturation & ovulation. A comparatively poorer endometrial lining is observed in iron deficient women. Iron restrictions depresses ovary functions, especially follicular development from secondary follicle to antral follicles and infertility. Iron defiency & iron deficiency anemia cause adverse pregnancy outcomes during all trimesters, during labour & after the delivery as well.