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.
Milk designated as 2 percent or low fat has a 2 percent fat-to-weight ratio. One cup of this type of milk contains 5 grams of fat, of which 3 grams are saturated. A 1-cup serving of 2 percent milk contains 139 calories, 10 grams of protein, 15 grams of carbohydrates and 13 grams of sugar.