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Iron is a chemical element; it has symbol Fe (from Latin ferrum 'iron') and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's outer and inner core. It is the fourth most abundant element in the Earth's crust. In its metallic state it was mainly deposited by ... Iron-rich foods are an essential part of any balanced diet. Know which foods are high in iron so you can add them to your favorite recipes. Learn more about Iron uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain Iron. Iron is an essential nutrient. So essential, in fact, that foods from infant formula to breakfast cereal are often fortified with iron. Learn why it matters so much and how to make sure you’re ... Iron overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.

Iron is a major component of hemoglobin, a type of protein in red blood cells that carries oxygen from your lungs to all parts of the body. Without enough iron, there aren’t enough red blood cells to transport oxygen, which leads to fatigue. Iron is also part of myoglobin, a protein that carries and stores oxygen specifically in muscle tissues. Iron is a mineral that plays several important roles in health. Read on to learn about the benefits and potential risks of iron supplements.