Iron is one of the most important minerals for your body. Iron is mostly found in your red blood cells. And helps with anemia and iron deficiencies. 7 to 27 milligrams is recommended daily — but pay close attention to age, gender and deficiencies. 

Iron supplements help to restore iron levels — cause deficiencies can lead to anemia and low iron can lead to heart issues. Low iron levels also can be the cause of explained fatigue. Iron is responsible for making proteins that give oxygen to the muscles for exercise and performance. Low iron counts can result in loss of concentration and attentiveness. Boost cognition, take iron supplements.