Nikolas
Created page with "== Summary == * Many minerals are needed by the body in small doses == Iron == Iron is essential for all living organisms. We require 1-3 mg of iron every day. Iron is absorbed as Fe2+ ions but is stored as Fe3+. Many proteins contain iron in humans. They can be divided into two groups: the ones that require iron as part of the heme group, and the ones that don’t contain heme. Most proteins belong to the first group, like haemoglobin, myoglobin, cytochromes, catalase..."
