Vitamin D Directory
Vitamin D is an essential vitamin that helps your body absorb calcium and phosphorus. Not enough vitamin D -- a vitamin D deficiency -- can cause pain, hormone problems, muscle weakness, and more. Follow the links below to find WebMD's comprehensive coverage about how vitamin D helps your body, how much you need, how to get it, and much more.
Osteoporosis Risk Factors: Fact vs. Fiction
Do you think you know about osteoporosis and its risk factors? Check out these myths.
Vitamin D Deficiency: Symptoms, Causes, and Health Risks
People who adhere to a strict vegetarian or vegan diet may not be getting enough Vitamin D, which research shows is essentially to healthy bones. Learn more from WebMD about getting plenty of Vitamin D and how a deficiency of the vitamin is diagnosed and treated.
What Is the Female Athlete Triad?
The female athlete triad is made up of three medical conditions in teen girls: eating disorders, amenorrhea (lack of menstrual periods), and osteoporosis or low bone mass. Find out more.
Vitamins and Minerals: How Much Should You Take?
Confused about how much of a vitamin you should take? Learn how to interpret measurements like Recommended Dietary Allowance or Daily Value.
Are You Getting Enough Vitamin D and Calcium?
Vitamin D and calcium are essential for bone health. How to know if you're getting enough.
Vitamin D: Vital Role in Your Health
If you want to lower your blood pressure, vitamin D may be just what the doctor ordered. If you're trying to reduce your risk of diabetes, or lower your chances of heart attacks, rheumatoid arthritis, or multiple sclerosis, then vitamin D should be at the front of the line in your daily supplement regimen.
The Truth About Vitamin D: Drug Interactions
Get answers to common questions on vitamin D.
Are You Getting Enough Vitamin D?
What you need to know about vitamin D, including how much you need, food sources of vitamin D, vitamin D blood tests, and vitamin D deficiency.
Slideshows & Images
Slideshow: The Truth About Vitamin D
Can vitamin D help you lose weight, fight depression, or even avoid cancer? Could you be "D" deficient? Learn the facts in our slideshow.
Slideshow: Super Foods for Your Bones
Some of the foods that are good for your bones might surprise you. Greens? Figs? Salmon? Dig in!