Final answer:
The amounts of macronutrients that must be disclosed on a food label are proteins, carbohydrates, and fats or oils, both in grams and as a percentage of the daily value based on a 2,000 calorie diet.
Step-by-step explanation:
Macronutrients on Food Labels
In the United States, packaged foods must legally include a nutrition facts label that discloses certain information. The amounts of macronutrients, which include proteins, carbohydrates, and fats or oils, must be clearly listed on the label. This information is provided in both grams and as a percentage of the daily value based on a 2,000 kilocalorie/day diet. Specifically, nutrition labels show the caloric content of a food item per serving and the breakdown into calories from each of the macronutrients.
Proteins and carbohydrates typically provide approximately 4 Calories per gram, whereas fats and oils provide about 9 Calories per gram. These values help consumers understand how much energy they can obtain from each macronutrient in the serving size of the food they are considering.