Hemoglobin helps red blood cells carry oxygen to your muscles and tissues. Abnormal hemoglobin levels can be a sign of several health problems. Hemoglobin is a component of your blood that delivers ...

Sickle cell disease (SCD) is a genetic disorder that causes red blood cells to take the shape of a sickle or a letter “C.” Levels of hemoglobin, a protein that helps carry oxygen on red blood cells, ...

Heavy or prolonged periods can cause iron deficiency anemia. Anemia may impact periods, but this requires further research. Iron deficiency anemia occurs if people do not have enough iron in the body ...

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 ...