The “normal”, medical range of 25-OH vitamin D (inactive storage form calcidiol) is 20 ng/mL to 100ng/mL.įor years, vitamin D status was thought to only be important for bone health. To avoid confusion, instead of abbreviating the terms, I’ll include them all each time one is mentioned.

This is the active form of vitamin D that’s responsible for its biological activities. Vitamin D is “activated” by the kidneys to 1,25 hydroxyvitamin D (1,25 OH vitamin D calcitriol). This is what doctors are measuring when you have your D3 levels checked. Vitamin D is stored in the liver as 25-hydroxy vitamin D (25-OH vitamin D calcidiol). You need to make decisions in the context of your own health circumstances & with the guidance of a professional. I’m going to explain why, review some scenarios, and give you general guidelines on how much to take for each scenario.Īs always, these are powerful supplement strategies and this is intended as an educational exercise. While D3 has amazing benefits to consider for your health, it is CRITICAL to consider K2 with any D3 supplement plan. Many now supplement with D3 freely looking for the benefits. We jumped on vitamin D as a “super vitamin” for good reason. You can eat a healthy diet, exercise, not smoke, and drink moderately – and still suffer from cardiovascular disease if calcium builds up in your arteries.īefore you run and throw out your D3 supplements, remember that most Americans have suboptimal levels of vitamin D3 in the first place and could benefit from more sun and vitamin D3. It contributes to atherosclerosis and vessel stiffness.Ĭardiovascular disease happens to be the leading cause of death. If calcium isn’t laid into bone, it will find itself in other tissues, like your arteries. Over-supplementation of vitamin D3 without ample vitamin K2 leads to problems of excess calcium.

Vitamin K2 controls where that calcium ends up. Vitamin D controls the absorption of calcium into the blood. This analysis will focus on the interactions of D and K foremost. Vitamins A and D work together with bone health but help support the utilization of the other. Vitamin D and K2 work with one another to maintain tight control over calcium levels in the body. It’s even better if you consider Vitamin A supplementation too. If you’re taking Vitamin D, it is critical that you consider Vitamin K2 supplementation. Your Go-To Resource for D3 and K2 Supplementation

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