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

Vitamin D3 seemed more effective than D2 at raising this important blood test. Furthermore, preliminary work showed that enzymes in the liver and the final vitamin D receptors (VDR) in important ...

Most people will need a blood test at some point in their lives. Blood tests are part of routine health screenings. They are used to check organ function and immune system activity, to diagnose ...

Vitamin D3 is more effective at raising and maintaining the vitamin D blood test (again, D2 binds less tightly to the vitamin D receptors in the body; therefore, D2 does not circulate as long in ...

For individuals with Seasonal Affective Disorder (SAD), a type of depression linked to reduced seasonal light, these effects ...

However, if you are on oxygen therapy, oxygen values must be constant for 20 minutes before the test. If you are taking medication to make your blood thinner or aspirin, you should tell your doctor ...

Vitamin D not only supports your immune system but can help you prevent bone disease, regulate mood and more. Here's how you ...

After discovering I was vitamin D deficient, I started religiously taking supplements, and I've never felt better.

A doctor says two diseases common in the UK hundreds of years ago are making a comeback as many people are unaware of what ...

Controversy has erupted among researchers over an effort to adopt blood tests and brain scans for diagnosing Alzheimer’s disease, rather than the cognitive screening that has been used for decades.

Can vitamin D supplements prevent heart disease? A new study finds no impact on cardiac health in older adults, even with ...

Our sense of smell does more than detect the aroma of fresh coffee or warn us about smoke. It might even be able to help ...