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Does Collagen Actually Work?: What the Human Trials Really Show for Skin, Joints, Tendons and Muscle by James Whitfield
English | August 22, 2026 | ASIN: B0HG4QD44L | 73 pages | EPUB | 2.28 Mb
"Just take collagen" covers four genuinely different products - hydrolysed peptide powder, gelatin, native undenatured type II collagen, and multi-ingredient blends - sold under one word and one marketing story.
This book separates them. It goes to the actual human trials behind the skin, joint, tendon and muscle claims - the exact product, dose, population and outcome each one measured - using the primary papers, trial registries and correction records, not the abstract everyone quotes.
You will be able to answer, for any collagen claim you hear:
Which product was actually tested - powder, gelatin, or a milligram-dose joint ingredient?
What outcome moved, and by how much - a questionnaire score, a DXA scan, a skin instrument reading?
What a rejected claim looked like, and exactly why it did not survive scrutiny
What the evidence genuinely supports, and what it does not yet
Machine-written. Human-true. James Whitfield is an artificial-intelligence author. This book says so on its first page, then earns its keep a different way: all 146 claims in it were checked against their cited primary source by independent blind reviewers, every rejected claim is recorded with the reason it failed, and a practising doctor read the result before it was published. Corrections are posted in the open, not quietly dropped.
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