Editorial Standards

Introduction

The distance between what nutrition research actually demonstrates and what the supplement industry claims it demonstrates can many times be wide enough to be problematic. I have spent more than twenty years running clinical trials and publishing peer-reviewed scientific research, and I have witnessed this problem firsthand. Most of the confusion reaching consumers does not come from fabricated studies. It comes from real studies described carelessly. A result found in mice gets reported as though it were found in people. A finding in one narrow clinical population gets presented as a general truth. I built this page so you can see exactly how content on this site is produced, and so you can hold me to it.

Who Writes and Reviews This Content

I write or review every article published on drlewisnutrition.com. My name appears in the author field of each post because I stand behind what it says. My credentials, my publication record, and my university affiliation are listed and independently verifiable on my About page. That page links to my ORCID record, my Google Scholar profile, my PubMed bibliography, my Wikidata entry, and my academic curriculum vitae. You do not have to take my word for any of it. Each page also carries the date it was last reviewed, so you can judge how current the material is before you rely on it.

How I Select Sources

Peer-reviewed primary research is the only acceptable basis for a claim about what a nutrient or compound does. Before I cite an article, I confirm three things. First, I confirm the study exists and that I have read what it actually reports, rather than a secondhand summary of it. Second, I confirm the study examined the specific question my sentence claims it examined. A source attached to a claim it does not support is worse than no source at all. Third, I confirm that I can link you to the primary record, normally a PubMed identifier or a DOI, so you can read it yourself. Reviews and meta-analyses have their place, and I cite them where they are the appropriate evidence. I do not cite a review as though it were an original finding.

How I Report Findings

Every finding on this site names the species and the study population inside the same sentence that reports the result. A result observed in mice is written as a result in mice. A result from a trial in dialysis patients is written as a result in dialysis patients. A result from healthy volunteers is written as a result in healthy adults. This rule sounds pedantic until you consider what the alternative does to a reader. A qualifier that arrives one sentence later has already misled you, even when every individual word in the passage is accurate. Placing the population inside the finding sentence also strengthens the honest claims. It tells you immediately whether the people in the study resemble you. I state the limits of a study before I state its findings, for the same reason.

Claims I Do Not Make

Three categories of claim are absent from this site by policy. First, I make no disease claims. I do not write that a nutrient treats, cures, prevents, manages, or mitigates any disease. Dietary supplements are not drugs, and the research does not support that language. Second, I make no safety claims. I do not tell you that a compound is safe. Safety depends on dose, duration, individual physiology, and interactions with medications you may be taking. Third, I make no superiority claims. I do not tell you that a product is the best available. That is a marketing assertion rather than a scientific finding. What I describe instead is structure and function: what researchers measured, in whom, and what they observed.

My Financial Interest

I am the Founder and President of Dr Lewis Nutrition®, and I have a direct financial interest in the products sold on this site. I state that plainly because you should weigh it when you read anything I write about nutrition or dietary supplementation. I also hold the position that a disclosure is worth very little unless the writing itself survives it. I do not sell a product that is based on what I believe is unsatisfactory scientific substantiation. If the evidence behind something I sell weakens, I will say so here and revise what I have written about it. Where a widely marketed ingredient lacks good evidence, I say so, including when I sell something in the same product class. You should judge the argument, not the disclaimer.

Corrections and Updates

Published work ages. When I find an error, I correct it. When new research changes what the evidence supports, I revise the page rather than leave the older claim standing. Each page shows the date it was last reviewed. If you believe something on this site is wrong, incomplete, or misleading, write to me at john@drlewisnutrition.com and tell me specifically what it is. I will look at the source, and if the criticism holds I will fix the page and note the change.

Conclusion

Standards mean nothing unless someone checks them. Every claim on this site is written to be checkable, and every source is linked to its primary record. My own commercial interest is stated where you can see it. Read the studies I cite, verify my credentials through the independent profiles I link, and hold me to what is written here.

This page was last reviewed and updated in September 2026.