Steve Bui, M.S.Iron is one of the most essential minerals to health; unfortunately, sometimes we neglect its importance. What makes iron so important? As a major component of red blood cells, it aids in transporting oxygen throughout the body. It can also play minor roles in liver function, prevention of bacterial infections, and cell growth. Iron deficiency can occur with heavy loss of blood, lack of dietary intake, and the inability to absorb iron metabolically. Iron deficiencies appear most o...