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The essential nutrient for strong bones (Hint: It isn't calcium)

by , 22 February 2016

Let's face it, when you think about bone health, your mind might travel back to the “Got Milk?” campaigns that successfully cemented the concept that drinking milk daily would help you grow big and strong. Am I right? I thought so.

Today, calcium is still equated with strong bones, but you would be hard-pressed to find an article that doesn't instruct us to also pair our calcium with vitamin D, the “sunshine vitamin.” That's because, aside from being a mood-booster, vitamin D plays an important role in helping the body to effectively absorb calcium.

And yet, there's actually a third nutrient that also has to be part of the conversation: Vitamin K2. And here's the real kicker: It's a nutrient that some estimate most of the Western population is deficient in, even those consuming healthy diets.

Why vitamin K2 is so crucial to your bone and overall health

Vitamin K2 is, as you can probably guess, is part of the vitamin K family. You may have heard about vitamin K as being essential for blood clotting, an activity regulated by the liver.

Vitamin K2, specifically as the menaquinone-7 (MK-7) form, contributes to blood clotting, but because it's the most bioavailable of the K vitamins, it's also able to extend beyond the liver to activate K-dependent proteins in other systems, such as the bones and the vasculature, or blood vessels.
Where bone health is concerned, vitamin K2 activates a protein produced by bone cells called osteocalcin, which binds calcium ions to the bone mineral matrix, thus strengthening the skeleton. But without adequate vitamin K2, osteocalcin remains inactive and calcium is not directed to create stronger bones.
So how do we get enough Vitamin K2? In truth, many doctors say it can be tough to find it in diet alone...

Where to find vitamin K2

While vitamin K can be found in leafy greens and other vegetables, natural vitamin K2 is harder to obtain. Still, it can be found in animal products, as well as bacterially fermented foods like mature cheeses, especially Gouda, and natto.
So while ideally we would obtain our nutrients from food, I recommend vitamin K2 supplements as a viable and effective alternative. For example, a three-year study of healthy postmenopausal women marked the first clinical trial to show that a long-term (more than one-year) supplement of vitamin K (as MK-7) improves bone mineral density, bone mineral concentration, and bone strength.
Importantly, research also showed substantial benefits of a nutritional dose of vitamin K2 in inhibiting age-related stiffening of arteries.

The bottom line: Do this for strong bones

Here are my two top tips for strong, healthy bones:

#1: Don't wait until old age to care about bone health
Building and protecting our bone health is something that has to be considered when we're young. We acquire 90 percent of our peak bone mass before age 20. Once we hit our peak bone mass in our late 20s or early 30s, that's all we will ever have. From there, it's a matter of maintaining and staving off bone loss as long and as much as we can.
#2: Balance your nutrients properley
Calcium and vitamin D are important nutrients, but you need to take them with Vitamin K2, specifically as MK-7. While vitamin D helps the body to more effectively absorb calcium, without vitamin K2, the body won't properly utilise calcium and therefore build stronger bones. It's also important to know what other nutrient pairings are ideal for your health.
You may not think much about your bone health these days, but remember that bones are the body’s foundation — they must be strong so that you can live active, healthy, fulfilling lives well into your senior years.

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