Projections of diabetes into the 21st century are of concern. One in 3 people born in the United States in 2000 are projected to develop diabetes at some point in their lifetime (45). On the basis of age-, sex-, and race-specific rates for diagnosed diabetes from the 1984 to 2000 National Health Interview Survey and census projections, a 225% increase is projected between 2000 and 2050, a rise from 12 to 39 million diagnosed persons of all ages and an increase in prevalence from 4.4% to 9.7% (120% increase) (46). Persons 75 years of age or older are expected to have the largest increase in terms of numbers of persons affected (460%), followed by increases of 241% among those 65 to 74 years of age, 159% among those 45 to 64 years of age, 125% among those 20 to 44 years of age, and 97% among those 0 to 19 years of age. Among racial and ethnic groups, the prevalence is expected to increase by 149% among Hispanic persons, 118% among black persons, and 104% among white persons. These increases are due to expected demographic changes in the population (26%), population growth (20%), and, mostly, changes in prevalence (54%). However, increasing prevalence among younger age groups and the emergence of type 2 diabetes in children may worsen these projections.