iron storage disease

The Keel-billed Toucan is sometimes kept in captivity, but has a high fruit diet and is sensitive to hemochromatosis (an iron storage disease).

In aviculture, their requirement of spacious cages, a high fruit diet and sensitivity to hemochromatosis (iron storage disease) make them difficult to maintain for novice keepers.

For example, people of Mediterranean ancestry may have genes for an iron storage disease, beta-thalassemia, and blacks and Mediterraneans may have genes for sickle cell disease.

It's hard to argue that ethnicity is an empty concept when one gene mutation for an iron storage disease, hemochromatosis, affects fewer than 1 percent of Armenians but 8 percent of Norwegians.