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The U.S. Department of Agriculture recommends children ages 9 and older and adults consume at least 3 cups from the dairy group each day. Active teenagers with high calorie requirements of 3,000 calories or more may require 4 cups from the dairy group each day.
Foods that have it: Milk, fortified nondairy alternatives like soy milk, yogurt, hard cheeses, fortified cereals, kale. How much you need: Adults ages 19-50: 1,000 milligrams per day. Women age 51 and older: 1,200 milligrams per day. Men age 51 - 70: 1,000 milligrams per day.