"Many Americans are deficient in vitamin D due to limited sun exposure from indoor lifestyles, sunscreen use and our northern ...

Typically, people with osteoporosis should maintain a serum 25-hydroxyvitamin D level of 30 ng/mL and supplement daily with 1 ...

Vitamin D supplements are generally in your system after 4 to 12 weeks. Learn more about the importance of consistent ...

Learn how vitamin D supplements may affect your blood pressure, who may benefit most, and how much to take safely—especially ...

Read the latest research on the importance of vitamin D for health, symptoms of vitamin D deficiency, suggested dosages and more.