You take the standard deduction instead of deducting your actual personal expenses. The amount you are allowed to deduct depends on your filing status and is adjusted for inflation each year. Check the IRS website for the current year standard deduction amounts.
Protein in Milk. According to the U.S. Department of Agriculture's National Nutrient Database, 1 cup of nonfat milk contains 8.26 g of protein. The National Dairy Council states that this gives you 16 percent of your Daily Value, or DV, for protein.
Carbs in Reduced-Fat Milk. Reduced-fat milk, or low-fat milk, has a macronutrient profile between that of skim and whole milk. Two forms of low-fat milk are available: 1 percent and 2 percent milk. A cup of 1 percent milk has 12.18 grams of carbohydrates, 8.53 grams of protein and 2.38 grams of fat. In 2 percent milk, the carbohydrates and protein content are the same as in 1 percent milk. But the fat content is 4.7 grams per cup, and each cup of 2 percent milk has slightly less water content. Lactose-Free Milk and Carbs