Vitamin D is an essential nutrient for your immune system, heart health, and more—but most Americans don't get enough of it. Here are several drinks you can try to boost your intake.

Vitamin D is an important nutrient but one that people tend to lack during the winter months. Vitamin D helps keep bones strong and works to support the body's immune system. The main way people get ...

It can difficult to get enough vitamin D from food alone—but when it comes to dietary sources, salmon ranks near the top, providing nearly 400 international units (IU) in every 3.5-ounce serving.

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