Several useful sites are provided by the United States Department of Agriculture:
Smart Nutrition 101 provides personalized eating plans and tools for healthy eating.
nutrition.gov USDA website - "What's in Food," "Weight Mangagement," "Nutrition and Health," "Shopping and Cooking" as well as other links to NUTRITION websites
Teen Health - includes a Vitamin and a Mineral chart as well as other information about teen health.
DON'T FORGET TO CITE YOUR SOURCES
Citation help can be found at the Owl at Purdue Online Writing Lab