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  1. Iron - Wikipedia

    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 …

  2. Iron deficiency anemia - Symptoms & causes - Mayo Clinic

    Sep 20, 2025 · Iron deficiency anemia is a common type of anemia. Anemia is a condition in which the blood doesn't have enough healthy red blood cells. Red blood cells carry oxygen to the body's …

  3. Iron: What It Is and Health Benefits

    Jul 25, 2024 · 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 …

  4. Iron - Health Professional Fact Sheet - Office of Dietary Supplements

    Iron overview for health professionals. Research health effects, dosing, sources, deficiency symptoms, side effects, and interactions here.

  5. Iron | Element, Chemical Formula, Chemical Name, Atomic Mass, …

    May 27, 1999 · Iron (Fe) is a chemical element and one of the transition elements. It is the most widely used and least expensive metal. Iron makes up 5 percent of Earth’s crust and is second to aluminum …

  6. Iron - Uses, Side Effects, and More - WebMD

    Learn more about Iron uses, effectiveness, possible side effects, interactions, dosage, user ratings and products that contain Iron.

  7. Iron - The Nutrition Source

    Iron Iron is an important mineral that helps maintain healthy blood. A lack of iron is called iron-deficiency anemia, which affects about 4-5 million Americans yearly. [1] It is the most common nutritional …

  8. 10 Signs and Symptoms Your Iron Levels Might Be Too Low

    Sep 12, 2025 · Low iron levels, or iron deficiency, may cause a variety of symptoms or signs, such as fatigue, paleness, headache, dizziness, or a craving for chewing ice.

  9. 9 Benefits of Iron Supplements That Go Beyond Anemia

    May 11, 2026 · Iron supplement benefits include anemia prevention and management, prevention of fatigue, improved athletic performance, hair growth, and more.

  10. Iron in biology - Wikipedia

    Iron is required for life. [1][2][3] The iron–sulfur clusters are pervasive and include nitrogenase, the enzymes responsible for biological nitrogen fixation. Iron-containing proteins participate in transport, …