Vitamin D3 and K2 are two nutrients that work together in your body, though they do different jobs. D3 helps your bones absorb calcium and supports your immune system, while K2 directs that calcium to the right places—your bones and teeth—instead of letting it build up in your arteries. Many people don't get enough of either nutrient from food alone, which is why understanding how they work and where to find them matters for your long-term health.
The articles here explore what these vitamins actually do, which foods contain them, how much you might need, and whether taking them together makes sense for your situation. You'll learn how they differ from other forms of these nutrients, what the research shows about their effects, and practical questions about dosing and safety.