The 2000-2004 NHANES provided the most recent data on the Vitamin D nutritional status of the U.S. population. Approximately 9 percent of the pediatric population, representing 7.6 million U.S. children and adolescents, were 25(OH)D deficient and 61 percent, representing 50.8 million U.S. children and adolescents, were 25(OH)D insufficient. Generally, younger people had higher Vitamin D levels than older people, males had higher levels than females, and non-Hispanic whites had higher levels than Mexican Americans, who in turn had higher levels than non-Hispanic blacks. Depending on the population group, 1-9 percent had levels <11 ng/mL , 8-36 percent had levels <20 ng/mL, and the majority (50-78 percent) had levels <30 ng/mL.