Find general resources on carbohydrates, proteins, fats and cholesterol, fiber, and water below. Use these links for specifics on a particular type of macronutrient:
Macronutrients
USDA Nutrient Lists -Reports by Single Nutrients, Release 25USDA. ARS. Nutrient Data Laboratory.
Reports of selected food items and nutrients, sorted either by food description or in descending order by nutrient content in terms of common household measures. Single nutrients include protein, fat, energy (calories) carbohydrate, fiber, sugar, calcium, iron, magnesium, phosphorus, potassium, sodium, zinc, copper, manganese, selenium, vitamin A, vitamin D, vitamin E, vitamin K, vitamin C, thiamin, riboflavin, niacin, pantothenic acid, vitamin B6, vitamin B12, folate, cholesterol, fatty acids and various phytonutrients and antioxidants.
Dietary Reference Intakes: MacronutrientsNational Academy of Sciences. Institute of Medicine. Food and Nutrition Board.
DRI table for carbohydrate, fiber, fat, fatty acids and protein.
Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids (Macronutrients) (2005)National Academy of Sciences. Institute of Medicine. Food and Nutrition Board.
Your Digestive System and How It WorksDHHS. NIH. National Institute of Diabetes and Digestive and Kidney Diseases.
Also in Spanish.
Factors Affecting the Macronutrient Intake of U.S. AdultsUSDA. Economic Research Service.
Study characterizes factors associated with macronutrient excess or inadequacy among US adults (2003).
Nutrient InformationAmerican Society for Nutrition.
Nutrient statements (including macronutrients, vitamins, minerals, and others) prepared by nutrition research experts, based on evaluation of information from peer-reviewed scientific reports.