Daniel Hart is the Supplement Brief editor focused on evidence-aware supplement comparisons, claims review, and buyer decision frameworks. His work translates clinical research, supplement-label details, safety limitations, and commercial disclosure into practical reader decisions.
Daniel is not a physician, pharmacist, dietitian, or medical reviewer. Medical claims in Supplement Brief articles are reviewed against cited sources and Supplement Brief editorial standards. Articles that receive review from a named clinician or credentialed specialist state that separately in the byline. Our external medical reviewers are listed on the methodology page, starting with Natallia Kalistratava, MD.
Editorial Focus
- Supplement claims and evidence strength across the site’s guide clusters (GLP-1, hair, sexual health, metabolic, sleep, and longevity)
- Dose, form, testing, safety caveats, and medication-context review
- Free evidence calculators and the clinical dose registry: trial-dose math built to sit inside the guides
- Label literacy: proprietary-blend arithmetic, elemental versus compound dosing, third-party certifiers
How articles are researched
Each guide starts with a database scan of human clinical evidence (PubMed, Cochrane, and cited specialty journals), then ranks products by what the published studies actually measured — dose, duration, population, and outcome. When a supplement category has limited human data, that limitation is stated in the guide rather than hidden behind marketing language.