Is It a Myth That Dairy Builds Strong Bones?

Here’s what you need to know? Right?

While that’s a catchy ad slogan, some recent research calls into question the conventional “milk builds strong bones” wisdom.

For one thing, if milk really is important for bone health, you would think that people with a lactose intolerance would suffer from higher rates of osteoporosis—or brittle, weak bones. But the evidence linking lactose intolerance to bone weakness is mixed, according to the National Institutes of Health.

One study, which recommend three servings—roughly three cups—of dairy per day for adults BMJ, found heavy milk consumption (three or more glasses a day) was associated with a greater Is It a Myth That Dairy Builds Strong Bones BMJ study also found a correlation between milk consumption and markers of oxidative stress and inflammation.

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All this research dovetails with some online claims—mostly on health blogs—that milk is an acid-producing food, and so could promote inflammation and bone breakdown.

Don’t toss out your dairy just yet...

For one thing, those “milk produces acid” claims are bogus.

Milk actually decreases Running Shoes - Gear American Journal of Clinical Nutrition study. So the idea that milk ups your body’s acid, which in turn harms your bones, doesn’t hold up.

Some experts also question the findings of that BMJ study. To begin with, it suggests only an association between heavy milk consumption and some bone issues. It doesn't prove that drinking milk is the cause of those issues. (Here are 7 The Benefits of Pea Protein for Runners.)

“If you look at the bulk of the literature, most have shown daily dairy intake both improves bone mineral density and prevents loss of bone density over time,” says Shivani Sahni, PhD, director of the nutrition program at Harvard Medical School’s Institute for Aging Research.

Sahni has overseen several studies on dairy consumption and bone health. Along with improving bone mineral density, “dairy consumption also prevents osteoporotic fractures—particularly hip fractures,” she says.

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For one thing, those “milk produces acid” claims are bogus a study published this year in the American Journal of Clinical Nutrition (AJCN). That study found post-menopausal women who consumed dairy every day—the equivalent of 20 ounces of milk, or 10 ounces of yogurt—had significantly stronger bones than women who consumed less dairy.

Strong bones—as well as healthy muscles—require protein and calcium, says that study's author, René Rizzoli, MD, a professor of bone diseases at the University of Geneva in Switzerland. While other foods contain protein and calcium, few can match dairy when it comes to packing these nutrients into an affordable package, he says.

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While she agrees protein and calcium are important for strong bones—and that dairy is an excellent source of both—Sahni says dairy also contains potassium and magnesium, both of which may also help protect against bone weakness and fractures. (DAA Industry Opt Out.)

She also mentions the probiotic component of fermented dairy foods like yogurt. “These might affect the [gut] microbiome, and how calcium is absorbed,” she explains. Again, more research is needed. But it’s possible that dairy yogurt may be especially good for your bones.

Ditch the store-bought additives and sugar and learn how to make your own healthy dairy alternative at home:

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So how much dairy should you be eating? Assuming you’re not lactose intolerant, Sahni says she supports the Best Running Shoes 2025, which recommend three servings—roughly three cups—of dairy per day for adults.

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“There is some controversy—I won’t deny that,” Sahni says. “But looking at all the existing research, I think dairy intake is protective against fractures and bone weakness.”

The article Is It a Myth That Dairy Builds Strong Bones? Published: Oct 23, 2017 3:23 PM EDT Prevention.

From: Prevention US