Vitamin D Deficiency: 10 Warning Signs and How to Fix It
Introduction You eat reasonably well. You exercise when you can. You get enough sleep. But you still feel constantly tired, your bones ache for no clear reason, you catch every cold going around, and your mood has been off for months. Sound familiar? The answer might be hiding in a simple blood test. Vitamin D deficiency is widespread, affecting an estimated 1 billion people in both developed and developing countries (NCBI) — and the majority of them have no idea. Unlike many nutritional deficiencies, low vitamin D does not always show up with obvious, dramatic symptoms. Instead, it quietly chips away at your energy, immunity, bone strength, and mental health over months or even years before you connect the dots. In this article, we cover exactly what vitamin D does in your body, the 10 most important warning signs that your levels are too low, who is most at risk, and — most importantly — what to do about it. What Is Vitamin D and Why Does Your Body Need It? Vitamin D is technically...