Vitamin D is known as the “sunshine vitamin," but for something so essential, most of us don’t get enough. In this episode of Ask a Nutritionist, dietitian Brandy Buro breaks down everything you need to know about vitamin D: why it matters, how to get enough, and how to understand your lab results. If you’ve ever wondered how much is too much (or whether that midwestern winter is messing with your levels) this episode is your go-to guide for staying in the sweet spot, all year long.