You can use facts and statistics to provide context, to support generalizations, or to establish the importance of your topic, as student writer Luisa Mirano does in her introduction.

In March 2004, U.S. Surgeon General Richard Carmona called attention to a health problem in the United States that, until recently, has been overlooked: childhood obesity. Carmona said that the “astounding” 15% child obesity rate constitutes an “epidemic.” Since the early 1980s, that rate has “doubled in children and tripled in adolescents.” Now more than nine million children are classified as obese.