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Biotin Supplements: What the Evidence Supports for Hair and Nails
A 2017 review found biotin helps only with true deficiency and rare conditions. The FDA's warning about lab interference completes the picture.
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Inside Supplement Regulation: Who's Checking What's in the Bottle
The FDA does not approve supplements before sale; companies carry the safety duty. A walk through the oversight file, from DSHEA to MedWatch alerts.