Most men and women after menopause need only 8 mg of iron a day. Here is who is better off with an iron-free multivitamin, who still needs iron, and how to tell.
Multivitamin Without Iron: Who Should Choose One and Why
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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.
Do Vitamins Expire? How to Store Supplements So They Stay Potent
Vitamins rarely become harmful after their date, but they do lose strength. Here is what supplement dates mean, why humidity ruins vitamins, and where to store them.
Gummy Vitamins vs. Capsules: Are Gummies as Good?
Gummy vitamins taste better, but many skip key minerals, add sugar, and drift from their labels. Here is how gummies compare to capsules and who they suit best.
Vitamin B6 Toxicity: Why More Is Not Better
Too much vitamin B6 can cause tingling and numbness, and it hides in more supplements than you think. Here is how much you need and how to spot hidden B6.
Folate vs Folic Acid: Do You Need Methylfolate for MTHFR?
Have an MTHFR variant? The CDC says you can still process folic acid. Here is how folate, folic acid, and methylfolate differ and whether testing is worth it.
Vitamin E: Why the Megadose Era Ended
Adults need 15 mg of vitamin E a day. Here is why 400 IU megadoses fell out of favor after large trials, what SELECT found, and how to get enough from food.
Calcium Supplements and Heart Risk: What to Know
Some studies linked calcium pills to heart attacks, while others found no effect. Here is what the evidence says, how much calcium you need, and why food comes first.
Does My Child Need a Multivitamin?
Most healthy kids who eat a varied diet do not need a daily multivitamin. Here is when a supplement makes sense, how to handle picky eating, and why safe storage matters.
Does Biotin Work for Hair? Plus the Lab Test Warning Most People Miss
Biotin is everywhere in hair supplements, but the evidence for healthy people is thin. Here is what research shows, and why high doses can throw off important lab tests.
Taking a GLP-1? How to Protect Your Nutrition
Eating less on a GLP-1 means every bite counts. Here is what research says about protein, vitamin D, B12, iron, and so-called GLP-1 supplements.
Is Fish Oil Worth Taking? What the VITAL Trial Found
The VITAL trial found fish oil did not lower major cardiovascular events overall, but heart attacks fell 28%. Here is what that means for you, plus the fish oil vs algae oil question.
Do You Need Vitamin K2 With Your D3? What the Evidence Shows
The internet says never take D3 without K2. The research is more nuanced. Here is what trials show about vitamin K, bones, arteries, and vitamin D dosing.