Meanwhile, if you have a vitamin B12 deficiency ... your doctor can help you determine the best course of action. Expect to take a blood test to check your vitamin B12 levels before adding ...

While there are many symptoms of vitamin D deficiency and many common causes, there are several sure ways to treat or prevent ...

Unfortunately, it’s not unusual to have low levels of the vitamin. While there isn’t a consensus on the ideal amount of ...

Here are the vitamin ... to test. However, our opinions are our own and have not been reviewed, approved, or otherwise endorsed by the supplement companies. Thorne wins our vote for the best ...

You could just be short on sleep, or you could have a vitamin deficiency (or something else ... A simple blood test can measure the amount of 25-hydroxyvitamin D you have circulating in your ...

Vitamin A does not prevent measles — vaccination offers the best protection against measles ... where vitamin A deficiency is common. Vitamin A deficiency isn’t common in the United States ...