Iron is absolutely essential for life. We should have it to build re blood cells to carry oxygen in the blood; to make new proteins to repair wear and tear of our tissues. But although it is necessary, it’s also quite dangerous. Iron behaves as an oxidant that can damage us. For instance, the most severe damage from a heart attack comes not from the blockage preventing blood flow but from the explosive reaction that occurs between stored iron released during the attack and the oxygen-rich blood returning to the heart muscle after the obstruction has been relieved. Usually women get deficiency of Iron. Live, meat, eggs and dark green vegetables are the good source of Iron.