Learn about the benefits of taking vitamin D and vitamin K2 together. Discover how they benefit bone and heart health.

Vitamin D is an essential nutrient for your immune system, heart health, and more—but most Americans don't get enough of it.

Medically reviewed by Erika Prouty, PharmD If you take vitamin D supplements to treat any deficiencies, it's essential to ...

Vitamin D is classified as a prohormone which, upon stimulation, helps in releasing an essential steroid hormone known as calcitriol. Research has revealed a close association between calcitriol and a ...

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 ...

To date, there remains a significant lack of information available on what health measures might elicit protective effects against coronavirus disease 2019 (COVID-19). Supplementation with vitamin D ...

In the summertime, vitamin D levels might not be much of a concern for many runners, considering the time we spend exercising ...

Vitamin D is a fat-soluble vitamin that plays a number of critical roles in your body. This nutrient is especially important for immune system health, leaving many people wondering whether ...

The sun is one of the best sources of vitamin D for the human body. How much sun a person needs per day depends on factors such as skin type, the season, and cloud coverage. Vitamin D is an essential ...

There has been a lot of talk about the role of vitamin D in COVID-19, practically ever since the pandemic began. But a new study has found there may be a link between your vitamin D status and your ...