Hemoglobin is a key protein found in red blood cells. Its main job is to carry oxygen from your lungs to the rest of your body. When hemoglobin levels drop, the body may not receive enough oxygen to ...

Iron deficiency anemia is when your body does not have enough iron to produce hemoglobin—the protein in red blood cells that carries oxygen throughout the body. Iron is an essential mineral needed to ...

Anemia affects almost 1 in 4 people worldwide. But while billions of people live with the disease, its signs and symptoms aren’t just part of everyday life. “Anemia is one of the most common global ...

Children can often appear tired or irritable, but when these symptoms become an ongoing problem, it could be a sign of something more serious. Fatigue, pale skin, and even a bad mood can be signs of ...