What mineral is crucial for oxygen transport in the blood?

Iron is essential for oxygen transport in the blood because it is a core component of hemoglobin, the protein in red blood cells that binds to oxygen. Each hemoglobin molecule contains four iron ions, which allow it to pick up oxygen in the lungs and release it to tissues throughout the body. This function is vital for maintaining the body's energy levels and overall metabolic processes.

In addition, without sufficient iron, the body cannot produce enough healthy red blood cells, leading to fatigue and decreased oxygen delivery. This is why iron is often emphasized in discussions about nutrition and health, particularly for individuals at risk of deficiency, such as vegetarians or those with certain health conditions. Understanding the role of iron in oxygen transport highlights its importance in supporting overall health and physical performance.