Medically reviewed by Soma Mandal, MD A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in ...

There has been no consensus on the optimal level of vitamin D intake to reduce PTH, and this is why many laboratories report the normal range of vitamin D to be so wide (20 to 40 ng/ml ...

Vitamin D affects how your immune system works, and plays a role in controlling certain types of inflammation, including the ...

"Typically, when you are diagnosed with a low vitamin D level, I think the best way would be for you to get supplemented to be able to raise your levels to within a normal range," Sukumar added. "And ...

Vitamin D is essential for our bodies, helping us absorb key minerals like calcium and magnesium that keep our bones and muscles healthy. We naturally get some vitamin D from sunlight, but in many ...

Like fruits, most vegetables are not significant sources of vitamin D, but fortified products like certain plant-based milks can provide it. The range for vitamin D levels, as measured in the blood, ...