In the US, the Centers for Disease Control and Prevention report "Health Effects of Gentrification" defines the real estate concept of "gentrification" as "the transformation of neighborhoods from low value to high value. This change has the potential to cause displacement of long-time residents and businesses ... when long-time or original neighborhood residents move from a gentrified area because of higher rents, mortgages, and property taxes. Gentrification is a housing, economic, and health issue that affects a community's history and culture and reduces social capital. It often shifts a neighborhood's characteristics, e.g., racial-ethnic composition and household income, by adding new stores and resources in previously run-down neighborhoods."