Vitamin D Dosing, Updated: What the Large Trials Changed About How Much Is Enough
The 600-IU baseline survived a decade of challenges; the Endocrine Society's 2024 guideline and the VITAL trial rewrote the case for testing and for high doses.
Dietary Supplements
Skincare and haircare examined by formulation: which actives work at which concentrations, how long results take, and where topical treatment stops.
Magnesium Supplement Forms, Compared: What the Bioavailability Data Actually Shows
Citrate, glycinate, oxide — the label chemistry decoded, with the absorption studies behind the rankings and the claims that outpace them.