Iron

Iron is a metallic element that is essential for life and is the most abundant element on Earth by mass. It plays a crucial role in the production of hemoglobin, a protein in red blood cells that carries oxygen throughout the body. Iron is also important in various industrial processes, from manufacturing steel to being a key component in tools and machinery. It can be obtained from dietary sources like meat, beans, and spinach. While essential for health, too much iron can be harmful, so it's important to balance intake through a diverse diet.