845. Iron helps make hemoglobin in red blood cells. Jan 2, 2026 · Iron (Fe), chemical element and one of the transition elements, the most-used and cheapest metal. That event is considered the transition from Bronze Age to Iron Age. Iron is the main ingredient used to make steel. Red blood cells help carry oxygen throughout your body. In some regions iron was used around 1200 BCE. Iron is important for healthy brain development and growth in children, and for the normal production and function of various cells and hormones. 5 days ago · Iron supplements can be an easy way to get more iron, but there are plenty of foods that are high in iron that you can include in your diet, too. Iron shares many properties with other transition metals, including the other group 8 elements, ruthenium and osmium.

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