The higher you are in the world, the thinner the air is. Higher altitudes mean it's more difficult to breathe and gain the oxygen your body needs.

Sickle cell disease is a public health concern in the US and worldwide. There is no easy cure, but patients can live normal and productive lives with prompt detection and the right treatment.

Dementia is one of those tricky conditions that can be difficult to understand. There are likely many different factors contributing to dementia, and even something as seemingly unrelated as a blood disorder may be involved.

Many pregnant women take prenatal supplements. Some contain iron while others may not. The amount of iron a woman needs during pregnancy is important to discuss with her care provider.

Parents often worry if their children are getting all the nutrients they need. Vitamins and supplements help fill in the gaps, but only if those supplements actually benefit a child.

Iron can reduce fatigue and prevent anemia. Now, women may have another reason to add more of the mineral to their diet: to ease PMS symptoms.

Doctors have long debated the appropriate timing for a red blood cell transfusion. Is it better to wait until the last minute when patients are in the most need? Or should doctors be proactive and transfuse early? Which is safer?

Even without diabetes, low blood sugar levels can lead to some serious risks and health problems. Researchers recently set out to see what these risks were.

Patients with a severe form of aplastic anemia may not see a benefit with traditional therapies. However, a platelet-enhancing drug could be an option for individuals with the rare blood disorder.

Created by a United Nations resolution in 2008, World Sickle Cell Day was created to increase awareness of the genetic disease called sickle cell anemia.