Why Vitamin K2 for CKD Matters
Today, we are discussing the fat-soluble Vitamin K and its critical impact on chronic kidney disease. If you are exploring the benefits of Vitamin K2 for CKD, it is essential to understand how different forms of this vitamin affect your body and overall kidney health.
Vitamin K is traditionally known for its role in blood clotting, but it actually gets broken down into different types: Vitamin K1 and Vitamin K2. When looking closely at this nutrient, health experts focus on how it breaks down further into MK4 and MK7. MK7, in particular, does not affect blood clotting in the same way and actually offers incredible benefits for individuals with chronic kidney issues.
One of the major complications for those with kidney problems is the calcification of the arteries, which leads to heart disease and conditions like atherosclerosis. In fact, this is the leading cause of death for people with chronic kidney disease. Utilizing this specific vitamin—especially the MK7 form—can help support bone health and prevent these severe cardiac complications.
People with chronic kidney disease (stages 3 to 5) and those on dialysis have a very high rate of low Vitamin K status. Up to 70-80% of these patients suffer from arterial calcification. While it is difficult to get a doctor to test for this specific deficiency, supplementing with MK7 is a supportive option many turn to.
But where does it come from naturally? Vitamin K1 comes from green leafy vegetables, while a large portion of K2 is produced by your intestinal bacteria. You can also get it from fermented foods like natto, certain cheeses, yogurts, and the Korean dish kimchi.
Because your gut bacteria produce this vitamin, taking probiotics is highly recommended. To get the most out of your supplementation, you need healthy intestinal organisms to produce the MK7 you need. Furthermore, if you have chronic kidney issues, you are likely already taking Vitamin D3 to help prevent calcification. If you take a Vitamin D supplement, make sure it has MK7 in it and aim for a higher dose formulation.
For those interested in supplementing this vitamin separately, studies suggest that lower doses don’t show as much benefit as higher doses taken over a longer period. While there is no officially established supplementation dose, taking up to 300 micrograms per day of MK7 has been safely used by many for over a decade for heart health. As always, while focusing on getting your kidney health back, see if incorporating probiotics, fermented foods, or MK7 supplements fits safely into your specific kidney diet!
