Medically reviewed by Patricia Mikula, PharmD Key Takeaways Calcium and vitamin D work best together because vitamin D helps ...

Calcium is an essential mineral for the body, but it needs other nutrients to help maximize its absorption and benefits. Learn more about how vitamin D and magnesium aid calcium absorption.

Vitamin D is important for your bones, muscles, nerves, immune system, and more. But if you get too much, it could lead to a rare and possibly serious condition called vitamin D toxicity. You may hear ...

Vitamin D tests involve taking a blood sample to measure the vitamin D levels in your bloodstream. There are two forms of vitamin D in the blood: 25-hydroxy vitamin D, or calcidiol, and 1,25-dihydroxy ...

‌Vitamins are important to your body’s health. The vitamins in your food, that you absorb from your environment, or get from supplements all work together. However, too much of certain vitamins can ...

Chronic inflammation is linked to inflammatory-related health conditions, including cancer, diabetes, and cardiovascular disease. Elevated inflammatory biomarkers in the blood like C-reactive protein ...

Nearly a quarter of Americans are estimated to have a vitamin D deficiency. Why is that? A 2022 study of National Health and Nutrition Examination Surveys (NHANES) data estimated that about 22% of ...

Vitamin D deficiency impacts more than 1 billion people worldwide. Vitamin D deficiency can negatively affect a child’s growth, immune response, mental health, and more, which is why proper treatment ...

We updated this article in November 2022 to add more information about each featured product, based on extensive research done by our team. Most experts agree that it’s best to get your vitamins and ...