Part I Using Food Labels
Choose three food items to evaluate. You might want to select three similar items, such as regular, low-fat, and nonfat salad dressing, or three very different items. Record the information from their food labels in the table below.
aTo calculate the percent of total calories from each food energy source (fat, carbohydrate, protein), use the following formula:
(total calories in serving of food item)
(Note: Fat and saturated fat provide 9 calories per gram; protein and carbohydrate provide 4 calories per gram.) For example, the percent of total calories from protein in a 150-calorie dish containing 10 grams of protein is:
|
(10 grams of protein) x (4 calories per gram)
(150 calories) |
= |
40
150 |
= | 0.27, or 27% of total calories from protein |
bFor the Total column, add up the total grams of fat, carbohydrate, and protein contained in your sample meal and calculate the percentages based on the total calories in the meal. (Percentages may not total 100% due to rounding.) For cholesterol and sodium values, add up the total number of milligrams.
cRecommended daily limits of cholesterol and sodium are divided by 3 here to give an approximate recommended limit for a single meal.