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.
Consider this: One cup of milk (8 grams), a 3-ounce piece of meat (21 grams), 1 cup of dry beans (16 grams) and an 8-ounce container of yogurt (11 grams) provide 56 grams of protein, according to the CDC. That didn't take much.