A vitamin D test is a blood test that measures the level of vitamin D (calciferol) in your blood. It can indicate whether the vitamin D levels in your body are low or high. Low vitamin D levels ...

and the sun), which makes this test extremely important in the field of nutrition. Low concentrations of 25-OH vitamin D causes secondary hyperparathyroidism (high levels of parathyroid hormone or ...

For instance, vitamin C supports immune function and collagen synthesis, while vitamin D regulates calcium absorption ... in the body regularly for the following reasons. Early detection of ...

There also are tests you can do at home ... Kidney or liver disease also can prevent the transformation of vitamin D to an active form. The reason vitamin D status does not attract more attention is a ...

New research finds that taking a daily vitamin D supplement may help lower blood pressure, especially for older adults with ...

Scientists are looking for volunteers to take part in a trial to see if taking vitamin D can give the immune system ... for six months if a finger-prick test shows they are deficient in the ...

There is a plethora of logical reasons for advocating the use of ... Vitamin D3 is more effective at raising and maintaining the vitamin D blood test (again, D2 binds less tightly to the vitamin ...