Send me a correction
If you know of a study that overturns a marked claim in one of my books, I want it.
Why this page exists
Every substantive claim in my books carries a marker showing what kind of evidence sits behind it, and the appendix explaining how the research was done ends with an invitation. This is where that invitation leads.
It is not a general contact form. It is for one thing: a specific claim, in a specific book, that you believe the evidence no longer supports.
What happens to what you send. I read it. If it holds up, the claim gets its marker changed or the passage gets rewritten, and the change is published in the book's Open Questions Register so that readers of the current edition can see it. If it does not hold up, I will tell you why. Either way you get a reply from me.
Please include the book, the chapter, the claim as printed, and a citation with a DOI or PubMed ID if you have one. A link on its own is harder to act on than a reference.
The form
What I have already corrected
The most recent one is mine. I had written that certain resistant-starch practices feed your own GLP-1. Going back to the human trials while writing The Muscle You Keep, I found the claim ran ahead of what has been shown in people. The correction is in the chapter where the claim was made, not in a footnote.
I would rather revise in public than be consistent and wrong. That is the whole reason this page has a form on it.