Iron is one of the most studied minerals in human biology. And yet its metabolism remains underestimated in everyday clinical practice. It is not a number on a blood test. It is a precise regulatory network involving the liver, the intestine, the thyroid, the immune system, the mitochondria, and several molecular signaling pathways.

This exploration takes you through that network in five levels. Each one illuminates a link in the system. At the end, you will have an overview. All this information is, as always, drawn from peer-reviewed scientific publications.

These explorations are built on peer-reviewed scientific publications. They do not replace a personalised medical opinion. See the terms.