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    Do You Still Need Dairy?

    Plus, the truth about lactose intolerance, cheese and cholesterol, and Greek yogurt vs. regular yogurt

    overhead view of various types of dairy (cheese and milk) Photo: Adobe Stock

    Many of us grew up believing that a healthy diet includes plenty of milk and other dairy foods. But there’s conflicting data about whether you need dairy or even if it really is good for you. What’s more, new products in the dairy aisle can make shopping for these foods confusing. The expert info that follows should clear this all up for you.

    Do adults really need cow’s milk?

    More on Dairy and Dairy Alternatives

    The nutrients that milk supplies are important because they help counter age-related muscle and bone loss, says Lena Beal, RDN, a spokesperson for the Academy of Nutrition and Dietetics. One cup has 8 grams of protein, about a quarter of the daily value for calcium, and 14 percent of the daily value for vitamin D. It also provides magnesium, potassium, vitamin B12, and more. But you don’t need to get these from milk. Yogurt, kefir, and cheese have them, too. And it’s okay to skip dairy altogether if you eat a variety of healthy foods with these nutrients, such as salmon, sardines, tofu, and dark leafy greens, says Zhaoping Li, MD, chief of clinical nutrition at the David Geffen School of Medicine at UCLA.

    Is Cow’s Milk Healthier Than Plant Milk?
    Dairy milk has a wider array of nutrients. Plant milks such as almond, oat, and coconut are usually fortified with calcium and vitamins A and D, but they have no vitamin B12 and little protein. They’re also lower in magnesium, potassium, and other vitamins and minerals. (Soy milk, however, has 7 grams of protein per cup.) If you choose a plant milk, make sure it’s fortified with calcium and vitamin D.

    Do You Have to Drink Nonfat Milk?
    Newer research indicates that the fats in milk aren’t linked with weight gain, type 2 diabetes, heart disease, or inflammation. A cup of nonfat milk has about 20 fewer calories than a cup of low-fat milk. For that amount of savings, choose the one that you prefer tastewise.

    Why Do You Have Trouble Digesting Dairy All of a Sudden?
    Lactose intolerance is common in older adults because the production of lactase, the enzyme in the small intestine that helps us digest the natural milk sugar lactose, declines with age. Your ancestry may be a factor as well. "The prevalence of lactose intolerance is higher among Asians, African Americans, Hispanics, and Native Americans when compared with Northern European heritage," says Christine Y. Lee, MD, a gastroenterologist at Cleveland Clinic. It also may be that you’ve lost the ability to process dairy simply because you haven’t had it for a while, she says. Slowly reintroducing it may correct the problem. If not, go with lactose-free options—or take a lactase enzyme pill like Lactaid when you do choose dairy.

    Is Greek Yogurt Better for You Than Regular Yogurt?
    There are some differences, but either is a great pick. Both supply protein, calcium, potassium, and probiotics. Greek yogurt is higher in protein. For example, three-quarters of a cup of nonfat plain Stonyfield Organic Greek Yogurt has 16 grams of protein; the same amount of its nonfat plain regular yogurt has 7 grams. Regular yogurt has 70 more mg of calcium.

    Does Cheese Raise Cholesterol?
    Several studies have found that the saturated fat in cheese has a neutral effect on LDL ("bad") cholesterol levels. One reason may be that the way nutrients and other components in cheese are structured affects how its saturated fat is processed by the body. A 2015 study in Food & Nutrition Research looked at people who ate nonfat cheese, regular cheese, or hardly any cheese for eight weeks. Cholesterol levels didn’t increase in either group that ate cheese, and some people saw improvements.

    Editor’s Note: A version of this article also appeared in the March 2024 issue of Consumer Reports On Health.


    Rachel Meltzer Warren

    Rachel Meltzer Warren, MS, RD, is a freelance writer based in the New York area who contributes to Consumer Reports on food and nutrition topics.