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

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

The Vitamin D Blood Test (25-OH Vitamin D): Who, How, When, and Where Clinically speaking, things began to change in the 1970s when the blood test for vitamin D (known as the "25-OH vitamin D ...

Vitamin C supports our immune systems, helps our bodies heal wounds, protects our joints and contributes to collagen ...

Sufferers often have few symptoms but too little can affect day to day life and can be serious for long-term health ...

Learn about the best time of day and way to take vitamin D and if you should consider a supplementing with this nutrient.

A few companies go above and beyond by incorporating blood testing and DNA data into their vitamin pack formulas. There are plenty of custom vitamin pack options from the various vitamin ...

High levels of vitamin C can interfere with multiple kinds of medications and results of certain medical tests such as blood ...

Tauja, 47, told Newsweek: "I feel so much better now than I did when I was vegan, which is the opposite of what I expected." ...

Peeing more than usual and feeling more thirsty are symptoms of too much vitamin D. Learn why overdosing on vitamin D is ...

If you've ever woken up in the middle of the night with sudden painful thigh, calf or foot cramping, you'll know just how ...

2022 — Researchers report on a novel function of vitamin K, which is generally known for its importance in blood clotting. The researchers discovered that the fully reduced form of vitamin K ...