Evidence & Sourcing Policy
Not all evidence deserves equal weight. We prefer evidence that directly matches the product, population, dose and outcome being discussed.
Evidence hierarchy
For health outcomes we prioritize systematic reviews, clinical guidelines and authoritative government health resources, then relevant controlled human studies. Manufacturer pages are useful for current labels, directions, pricing and claims—but not as independent proof those claims are true.
Ingredient extrapolation
Evidence for an isolated ingredient is not automatically evidence for a finished multi-ingredient supplement.
Evidence notes & sources
For health and weight-management topics, we prioritize independent health authorities and systematic reviews. The NIH Office of Dietary Supplements says there is little scientific evidence that weight-loss supplements work and notes potential medication interactions. NCCIH similarly cautions that many products marketed for weight loss have not been proven safe or effective. A Cochrane review found green-tea preparations produced a very small, statistically non-significant reduction in weight outside Japan and concluded the effect was unlikely to be clinically important.