Primary sources we consult
- PubMed — U.S. National Library of Medicine: database of peer-reviewed biomedical literature.
- NIH Office of Dietary Supplements: fact sheets on vitamins, minerals and other supplement ingredients.
- National Center for Complementary and Integrative Health (NCCIH).
- MedlinePlus: health information from the U.S. National Library of Medicine.
- Centers for Disease Control and Prevention (CDC).
- U.S. Food and Drug Administration — Dietary Supplements.
How we use sources
We read the original publications whenever possible and summarize them in plain language. Research findings are often preliminary, and a single study rarely proves that something works for everyone. Always talk to a healthcare professional about your individual situation.
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