

Vitamins D and K are both fat-soluble vitamins that play central roles in calcium metabolism.* Vitamin D promotes the production of vitamin K-dependent proteins, which require activation by vitamin K in order to function properly.* 1 (This article contains content provided by one of our trusted sponsors.) Here are some little-known facts about their interactions from our friends at Protocol for Life Balance. Important news: With so many people taking vitamin D, they may be short-changing themselves by not taking a vital companion nutrient that’s less in the limelight-vitamin K.
