Definition. Rickets (in children) and osteomalacia (in adults) are two forms of a metabolic bone disease resulting from vitamin D deficiency. Both cause softening and weakening of bones because of defective or inadequate bone mineralization. Rickets. Copyright Â© Nucleus Medical Media, Inc.
The flow from west to east: Disease. In terms of diseases, the Columbian Exchange was a wildly unequal affair, and the Americas got the worst of it. The flow of disease from the Americas eastward into Eurasia and Africa was either trivial or consisted of a single important infection.
A major consequence of Columbus's voyages was the eventual exchange of goods between the Old World (Europe) and the New World (the Americas). Listed below are some of the goods that were shared in this Columbian Exchange between the continents. major consequence of Columbus's voyages was the eventual exchange of goods between the Old World (Europe) and the New World (the Americas). Listed below are some of the goods that were shared in this Columbian Exchange between the continents.