D3 and D2 sound interchangeable, but they are not. Here is how the two forms differ and why it matters when you choose a supplement.
Vitamin D3 vs D2: What’s the Difference and Why It Matters
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The Vitamin Armor Blog
Science-backed guidance on vitamins, minerals, and daily supplementation. Written for athletes, active adults, and anyone who wants to make informed decisions about what they put in their body.
How to Choose a Daily Multivitamin That Actually Works
With hundreds of multivitamins on the shelf, choosing one is confusing. Here is a simple, science-based way to pick one that actually works.
Common Nutrient Deficiencies Beyond Vitamin D: B12, Iron, Magnesium, and More
Vitamin D gets the headlines, but B12, iron, magnesium and others are common gaps too. Here are the symptoms and who is most at risk.
5 Signs of Vitamin D Deficiency (And What to Do About It)
Five common signs of vitamin D deficiency, and the practical steps to confirm it and correct it with your healthcare provider.
The Essential Guide to Vitamins and Minerals: What They Do and Why They Matter
A plain-language guide to the essential vitamins and minerals: what they do, where you get them, and why getting the right amount matters.
How Vitamin100 Was Formulated: The Thinking Behind a 100% Daily Value Multivitamin
Why every nutrient in Vitamin100 sits at 100% of the Daily Value, and the physician-led thinking behind a multivitamin with nothing extra.
Which Vitamins and Minerals Matter Most for Active Adults?
Staying active changes what your body needs. Here are the vitamins and minerals that matter most for active adults, and why.
Vitamin D for Athletes: What the Research Shows About Performance, Recovery, and Deficiency
What the research shows about vitamin D for athletes, from performance and recovery to how common low levels are among people who train.