Iron in Human Blood

 A male of average height contains around 4 grams of iron, a female has about 3-5 grams, and children contain less than or equal to 3 grams. Most of this iron is stored in hemoglobin, a protein in red blood cells that carries oxygen to the body’s organs and tissues, and also takes carbon dioxide from the organs and tissues to the lungs. Humans lose about 1 to 1.5 milligrams of iron daily. This is carried out by urine, vaginal fluids, sweat, feces, and tears. Iron is formed by stars with a large enough mass via fusion. 


Sources: How Much Iron Is In The Body | Iron Disorders Institute, Hemoglobin test - Mayo Clinic, Interesting and Useful Facts about Iron (thoughtco.com)

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