How to calculate the Energy available from foods

To calculate the energy available from a food, multiply the number of grams of carbohydrate, protein, and fat by 4,4, and 9, respectively. Then add the results together. For example, 1 slice of bread with a tablespoon of peanut butter on it contains 16 grams...

Recommended dietary allowance (RDA)

Recommended Dietary Allowance (RDA) the amounts of selected nutrients considered adequate to meet the known nutrient needs of healthy people. The RDA are based on scientific knowledge and have been presented by a committee of the Food and Nutrition Board (FNB) of the...