Vitamin D levels can be measured with a blood test. This test can indicate whether you have adequate levels, are at risk of a ...

Discover the most effective ways to boost your vitamin D levels and prevent vitamin D deficiency, including safe sun exposure ...

Vitamin D tests involve taking a blood sample to measure the vitamin D levels in your bloodstream. There are two forms of vitamin D in the blood: 25-hydroxy vitamin D, or calcidiol, and 1,25-dihydroxy ...

Maintaining normal vitamin D levels may improve the efficacy of immunotherapy in patients with advanced melanoma, a new study suggests. The finding comes from a study of 200 patients with melanoma who ...

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 ...