What Is The Evidence File?
The supplement and wellness industry runs on ingredients and claims. Ashwagandha is in everything. Every third supplement promises to “support gut health.” Trending compounds go from obscure to ubiquitous in a matter of months. Marketing claims get repeated across so many websites that they start to feel like established science — even when the actual evidence is thin, mixed, or nonexistent.
The Evidence File exists to trace these ingredients and claims back to the source.
Where our Investigation Reports focus on specific products and the brands behind them, The Evidence File takes a step back to examine the raw materials those products are built from. When we investigate whether a particular supplement works, that investigation is only as good as our understanding of the ingredients inside it. The Evidence File is where that understanding gets built.
What We Cover
Ingredient Deep Dives. A single ingredient — ashwagandha, berberine, akkermansia, bakuchiol, shilajit, NAD+ precursors, whatever is trending — examined in detail. What has it actually been studied for? In what populations? At what doses? Were the studies conducted on humans, animals, or cell cultures? Were they funded by the ingredient's manufacturer? How large were the trials? What did the control groups look like? And critically — does the way this ingredient is used in commercial supplements bear any resemblance to how it was used in the research?
Claims Analysis. “Supports gut health.” “Promotes healthy inflammation response.” “Clinically proven.” “Doctor recommended.” These phrases appear on thousands of products. The Evidence File examines what these claims actually mean — or do not mean — from a regulatory and scientific perspective. What is a “structure/function claim” under FDA rules? What is the difference between “clinically studied” and “clinically proven”? What does “third-party tested” actually guarantee? We decode the language so you can read labels with sharper eyes.
Dose & Bioavailability Analysis. One of the most common gaps between supplement marketing and supplement reality is dosing. A product may contain an ingredient that has genuine research behind it — but at a fraction of the dose used in the studies. Or the ingredient may be present in a form with poor bioavailability, meaning your body absorbs only a small percentage of what you swallow. The Evidence File examines these gaps when the data allows.
Emerging Research Tracking. When a new compound, mechanism, or health claim starts gaining attention — in scientific journals, on social media, or in product launches — The Evidence File tracks the evidence as it develops. Early-stage research is not the same as established science, but it is worth understanding. We cover emerging areas with appropriate caveats, distinguishing between what is promising, what is preliminary, and what is pure speculation.
How to Read an Evidence File Entry
Evidence File entries are structured to help you assess the strength of the evidence yourself, not just take our word for it. A typical entry includes the following.
What the claim or ingredient is. A plain-language explanation of what is being discussed and why it is relevant to consumers right now.
What the research shows. A summary of the published scientific literature — with attention to study quality, sample sizes, funding sources, and the gap between laboratory findings and real-world human outcomes.
What the marketing says vs. what the evidence supports. A direct comparison between how the ingredient or claim is used in commercial marketing and what the research actually demonstrates.
The bottom line for consumers. A clear, plain-language assessment of where the evidence stands today — and what questions remain unanswered.
Sources. Every Evidence File entry includes references to the studies and sources discussed, so readers who want to go deeper can access the primary literature themselves.
Important Context
Evidence File entries are educational and informational. They represent our editorial summary of published scientific research and are not clinical assessments, prescribing guidance, or treatment recommendations.
Science evolves. A research conclusion that is well-supported today may be revised, challenged, or overturned by future studies. Our entries reflect the state of the published evidence at the time of writing. We display publication dates prominently and update entries when significant new research warrants revision, but we cannot guarantee that every entry reflects the most current state of the science at the time you read it.
We are researchers and writers, not laboratory scientists or clinicians. Our summaries are based on our reading of published literature and are subject to the same limitations described in Our Research Process. If you are making health decisions based on a specific ingredient or claim, consult a qualified healthcare professional who can evaluate the evidence in the context of your individual health situation.