Vitamin D levels can be measured with a blood test. This test can indicate whether you have adequate levels, are at risk of a vitamin D deficiency, or have levels that are too high. Levels that are ...

New research indicates that for patients with advanced skin cancer, it may be important to maintain normal vitamin D levels when receiving immunotherapy medications called immune checkpoint inhibitors ...

Before you rush to the store or add the supplements to your online checkout cart to combat COVID-19, it's important to know if you are vitamin D deficient. Although vitamin D is called a vitamin, it's ...