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.
Calcium Supplements and Heart Risk: What to Know
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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.
Iodine and Selenium: The Thyroid Minerals
Your thyroid depends on iodine and selenium, but both are easy to under- or overdo. Here is how to get enough from food, salt, and Brazil nuts without going too far.
Water or Electrolytes? A Summer Training Hydration Guide
For most workouts under an hour, water is enough. Here is when electrolytes help, how to measure your sweat rate, and why overdrinking is a real risk.
Should You Take Iron Without a Blood Test? What Ferritin Tells You
Tired and thinking about iron pills? Here is why a quick ferritin test should come first, who is most likely to be low, and how to make iron treatment work better.
How Much Zinc Is Too Much? Immune Support Without Overdoing It
Zinc is in lozenges, gummies, and most multivitamins, so it is easy to overdo. Here is how much you need, where the limit is, and what the cold research really shows.