Everything You Need to Know About Vitamin D

The sunshine vitamin is essential to our health, but some of us don’t get enough. Find out what vitamin D is, what it does for the body, how to get it, and if you can have too much.

By Anna Nordseth; Medically Reviewed by Dr. Ahmad Talha Azam
Oct 10, 2023 5:00 PMOct 29, 2024 8:22 PM
Young Woman is holding Vitamin D Capsule. Sun and blue Sky.
(Credit:Food Impressions/Shutterstock)

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In an era where indoor lifestyles and office-centric work environments have become the norm, a silent health concern looms large: vitamin D deficiency. Vitamin D is crucial for bone health, immune function, and overall well-being. 

However, modern lifestyles that keep us indoors don't lend themselves to getting enough sun for sufficient vitamin D production. As a result, experts estimate that nearly 50 percent of Americans aren't getting enough vitamin D.

Despite its significance, questions remain: How much is enough? Can supplements effectively address a deficiency? Is there a benefit to taking more than the recommended amount?

The answers to these questions remain a topic of research and debate among researchers and doctors.

What Exactly Is Vitamin D?

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