Ben Greenfield - Influencer of False Promises?

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The very first time I put it on, it was a device that you wear on your brachial plexus, just like the sleep technology, and my migraines were basically gone.

In a more recent collaboration on January 23, 2026, Michael posted a story of Greenfield promoting the Vortice Disc.

The same story was concurrently posted on the Vortice Disc and Greenfield Instagram accounts offering an affiliate-type 15% discount code ("BEN15"). Here is a transcript of that story.

» Who is Ben Greenfield and do his endorsements inspire consumer confidence in the efficacy of the products and practices he promotes?

Michael's says Greenfield is "one of the U.S. top health experts". However, we cannot find anything to verify that statement although Greenfield appears to have over 870K social media followers/subscribers.

In his YouTube video of March 19, 2024 Greenfield identifies himself as the "World's Top Biohacker" and recommends "coffee enemas and blowing ozone gas up one's butt". More recently Greenfield promoted the idea of achieving health benefits by injecting an experimental peptide clearly labeled "not for human use" (Met Enkephalin).

Greenfield's critics allege he blends anecdote with pseudo-scientific language and is closely tied to commercial products and services he sells or endorses, creating strong financial incentives behind questionable claims. Readers may wish to be wary because many of the interventions he promotes are not just unsupported by empirical research — they’re sometimes flagged by medical authorities as ineffective or outright dangerous, making his recommendations a risky substitute for evidence-based medical guidance.

They similarly criticize Greenfield as a promoter of a mix of fringe “biohacks,” unproven medical claims, and conspiratorial narratives that often contradict established scientific and regulatory evidence, particularly around vaccines, stem cells, ozone therapy, “alternative” cancer ideas, and performance-enhancing gadgets.

The information presented below was gathered from Internet searches relating to Ben Greenfield. The source materials are referenced by the various hyperlinks which readers are invited to review in full.

More recently, Ben Greenfield, a former bodybuilder with an Instagram following of nearly 250,000, posted about ozone therapy, an alternative medicine he claims is “proven to kill the SARS coronavirus” and “could also work on the new virus.” Greenfield’s post included a link to buy a $6,000 at-home ozone generator—with code BEN100 for a $100 discount.

“I bought their Quantum 5 Ozone Generator, and have been doing daily rectal ozone insufflation for myself and my family with it,” Greenfield wrote. “These are disappearing as people find out about how potent they are for viruses and for strengthening the immune system so I had to get this post out quickly. They will likely be sold out by the end of this week.”

Ozone, a molecular form of oxygen, can be used as a disinfectant. But “the idea of using a disinfectant internally is a flawed one,” says Michael Starnbach, whose lab at Harvard focuses on microbiology and immunobiology. It’s about as logical as a Lysol enema, and possibly dangerous.

In an interview, Greenfield said he bought his ozone generator at the encouragement of a functional medicine doctor, a type of alternative health practice. “I realize this is anecdotal, but many of the functional medicine docs I speak to are using ozone and I’m pretty compelled as far as what I’ve seen,” he said. But FDA regulations warn that “ozone is a toxic gas with no known useful medical application in specific, adjunctive, or preventive therapy. In order for ozone to be effective as a germicide, it must be present in a concentration far greater than that which can be safely tolerated by man and animals.”

Greenfield stands by his post about ozone therapy and says he tries to provide his following with as much of the research as possible. “I’m pretty careful with what I stick up my ass,” he says.

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Sheila Kealey works with researchers at the UC San Diego Moores Cancer Center (here's Kealey's Google Scholar Profile) is critical of Greenfield alleging, among other things, exploiting illness for profit, did not hold back any punches in her article.

Ben Greenfield is  a successful marketing guru of hyped-up health products. But he goes beyond promoting nutrition and  health products and advice that have no robust scientific grounding. . . by many accounts some of his advice could be dangerous if followed. Unfortunately he has a wide influence as author of 13 books, and, according to his website, Greenfield was one of the world’s top 100 most influential people in health & fitness in 2013 and 2014.

He has a popular website, articles, podcast, and coaching business and sells many unfounded expensive dietary supplements and his own “Kion” products.

He is into extreme biohacking (Steven Novella, clinical neurologist and assistant professor at Yale University School of Medicine,  calls biohacking “a rebranding of the usual self-help pseudoscience“).  Greenfield’s recent “at home” stem cell injections was televised on a Science of Sport Ad by Sportsnet (a Canadian sports network) – a testament to Greenfield’s worrying popularity and appearance as a fitness expert. This caused a furor among sports science experts who called the segment   Finally Sportsnet removed the Greenfield segment, but it is worrying that the fitness community sees Greenfield as an expert.

He sells a magic “power bracelet” that is better than all the other power bracelets out there because it uses Piezoelectricity to bring your body into a “state of cohesion. ”  At least this snake oil will simply cost the user money, and they may benefit from a placebo effect . . .

Exploiting Illness for Profit. A look at Ben Greenfield’s Cancer Resources is an example of his misinformation and very concerning: topics include “Why You’ve Been Lied to About Cancer and What You Can Do About It” with information from quack Dr. David Minkoff, who promotes bogus cancer treatments including metal detoxification and metal chelation.  Beyond these therapies being expensive and useless for the patient, it is plausible that cancer patients would delay or forgo conventional treatment in favor of this quackery.  And we now have good data showing that cancer patients who seek out alternative and complementary cancer treatments are more likely to refuse conventional cancer treatment, and with a 2-fold greater risk of death compared with patients who had no complementary medicine use.

His podcast guests would all be excellent candidates for this page of “experts” you shouldn’t trust (including anti-vaccine advocates, breatharianism proponents, supplement salespeople, biohacking experts) and I’m sure they are happy to have a platform to promote their pure opportunistic snakeoil.

Here  is a sample podcast title:

Deer Placenta Smoothies, Smearing Colostrum On Your Face, How To Use A Clay Mask & Much More

Ben Greenfield’s site is a cesspool of pseudoscience. He promotes anti-vaccine propaganda, his nutrition ideas are not supported by robust science, his podcast guests are quacks, his advice to cancer patients dangerous, and his biohacking experiments are often ridiculous.

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For interest's sake only, here is a summary review of Greenfield's claims, evidential materials, and links to the cited sources, prepared with the assistance of ChatGPT: