Where Did We Come From? Explore the origin of our solar system and the start of life itself, how head lice figure in human evolution, and more. Revealing the Origins of Life. How did molecules first make the leap from non-living to living? An English chemist may have solved part of the mystery. Is There Life on Mars? The decades-long search for life on the Red Planet heats up with the discovery of frozen water. How One Man Reclassified Life
To research the causes of Erdheim-Chester Disease, consider researching the causes of these these diseases that may be similar, or associated with Erdheim-Chester Disease: 1  Polyostotic sclerosing histiocytosis. 2  Bone pain. 3  Retroperitoneal fibrosis. 4  Diabetes insipidus. 5  Exophthalmos. 6  Dyspnea. 7  Ataxia.
The most common cause of iron deficiency is bleeding or blood loss, usually from the gastrointestinal tract. Other causes include a lack of iron in your diet, or changes in your body due to pregnancy. Common causes of bleeding in the gastrointestinal tract include: Cancer- of the gastrointestinal tract (such as colon or rectum cancer) Hemorrhoids - these are swollen veins in the lower rectum.