In a small but revealing study, scientists discovered that tears strongly mirror blood glucose and saliva may reflect vitamin D status. This could lead to less invasive ways to monitor chronic health.

Millions of Americans take a daily vitamin, assuming it is doing something. That assumption is not always correct. The gap between what you swallow and what ...

Dr Anjali Kumar explains why vitamin D deficiency is extremely common among women and how a simple blood test can help detect ...

A vitamin D test measures your blood's vitamin D levels to see if they are too high or too low. Low vitamin D levels can ...

Low vitamin D levels may affect your sex drive by influencing hormones, mood, energy, and blood flow. Learn how vitamin D deficiency affects libido and whether supplements can help.

Sometimes it may feel like almost every visit to the doctor includes a dreaded blood draw. Blood tests can reveal a lot about the state of your health. But whether you should get a specific test (and ...

When exposed to sunlight, your body manufactures vitamin D using a type of cholesterol. (Yes, even a certain amount of cholesterol is necessary for good health!) This is why vitamin D is often ...

According to new research published on November 12, 2024, in the Journal of the Endocrine Society, supplementation with vitamin D plus calcium may help lower blood pressure in older adults with ...

Vitamin D tests certified by the U.S. Centers for Disease Control and Prevention (CDC) Clinical Standardization Programs (CSP) are well calibrated overall, according to a new study presented Sunday at ...

We know vitamin D is important for our overall health, especially when it comes to maintaining strong bones, but did you know it also plays a key role in brain health? While there’s no proven method ...

Two new lab tests to measure blood levels of vitamin D are inaccurate more than 40% of the time, according to a new study. Researchers say newer tests tend to overestimate the number of people who are ...

Dr. Omar Al-Heeti is an assistant professor of medicine at Southern Illinois University and practices internal medicine with a specialty in infectious diseases. He received his medical degree from the ...