Nancy Rodriguez, PhD, RDN, FACSM, a professor of nutritional sciences at the University of Connecticut, says that back in her day, no one was talking about vitamin D supplements. “In the ‘60s and ‘70s ...

What Is Vitamin D Deficiency? A vitamin D deficiency means you don't have enough of this vitamin in your body. You need vitamin D to grow and maintain your bones. You could be at risk for deficiency ...

If you have too little calcium, you could have weak bones (known as osteoporosis) or have a higher risk of fracturing your bones. If you don't get enough calcium from what you eat or supplements, your ...

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Vitamin D and vitamin K2 are two essential nutrients that the body uses for heart health and bone growth. When these vitamins are taken together it may increase its effectiveness. Consult with a ...

Learn how to naturally increase your vitamin D levels to support bone health and immunity. Explore safe sun exposure and dietary options to prevent deficiency, and learn who may be more at risk. 1.