The supplement world runs on testimonials. Dramatic before-and-after stories, glowing personal accounts, someone swearing a product changed their life. I’ve been in this industry over 30 years, and I want to tell you why I treat those stories with caution — even the ones about products I use and believe in.
The core problem is that a single story can’t separate the product from everything else. When someone feels better after starting something, dozens of things changed at once — hope, attention to their health, other habits, the natural ups and downs of how a body feels, and the simple fact that we notice what we expect to notice. A testimonial captures the feeling of improvement honestly, but it can’t tell you what caused it. That’s not a knock on the person; it’s just the limit of the format.
This matters because testimonials are the easiest thing in the world to weaponize. Every product, effective or useless, can produce glowing stories. If stories were proof, every product on the market would be proven. So I don’t lean on them, and I’d be a little suspicious of anyone whose entire case rests on them.
What I try to lean on instead is mechanism and research — is there a real, documented reason this would work, published somewhere I can check? With redox signaling, there is: a large body of peer-reviewed science on how these cellular messengers function and why they matter as we age. That’s the foundation I stand on, not a highlight reel of personal stories.
I’ll share my own experience honestly when it’s relevant — but I’ll always tell you that’s my experience, not proof, and you should weigh it accordingly. If you ever catch me trying to sell you on stories alone, push back. Hold me to evidence. It’s the standard I want to be held to.
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