... one for younger children (2-11 years) and one for adolescents (12-17years), based on differences in the nutritional needs and recommended caloric intake ofadolescents compared to younger children? (2) ... U.S.population, including children, and the majority of adults. The Tolerable Upper Intake31Level (UL) is 2,300 milligrams for persons 14 years and older, but is lower for younger children, with not ... extrapolation based on lower calorierequirements for children and older adults. The AI for children ages 1 to 3 years is 1,000milligrams per day. The AI for children ages 4 to 8 years is 1,200 milligrams...