I recently came across some rather convincing-looking videos promoting a matcha weight-loss trick, and something about them immediately caught my attention. They featured familiar faces making bold claims about a simple drink that could supposedly help people shed stubborn fat. But after looking closer, I realised these weren’t genuine celebrity endorsements. The videos appeared to be AI-generated advertisements designed to sell weight-loss supplements. So I decided to investigate what was actually behind this viral matcha trend, which products were being promoted, and whether there was any truth to the claims.
Key Takeaways
- Viral videos featuring Oprah Winfrey, Melissa McCarthy, Joe Rogan, Mel Robbins and other public figures have been reported as AI-generated or manipulated advertisements for a supposed matcha weight-loss ritual.
- There is no credible evidence that these celebrities endorsed the advertised ritual or the supplements being sold.
- The videos use the promise of a simple matcha recipe to attract viewers before directing them towards commercial weight-loss products.
- One documented campaign promoted Leaftide, but purchase buttons were reportedly redirecting customers to KeySlim Drops.
- The advertised weight-loss and GLP-1-like effects have not been established through reliable clinical evidence.
- The deceptive advertising is well documented, but it does not automatically prove that every seller or every bottle associated with the campaign is fraudulent.
What Is the Matcha Weight Loss Ritual?
The viral matcha weight-loss ritual is an online marketing campaign built around the promise of a simple morning drink that supposedly helps people lose weight, suppress their appetite and improve their metabolism.
The videos often look like podcast interviews, celebrity conversations or health discussions. They feature familiar faces discussing an allegedly overlooked weight-loss discovery, sometimes suggesting that a particular matcha combination can produce results comparable to prescription weight-loss medication.
However, the videos are not genuine endorsements. Investigations published in September 2026 identified manipulated or AI-generated footage featuring public figures including Oprah Winfrey, Melissa McCarthy, Joe Rogan and Mel Robbins. The advertisements make it appear as though these individuals have discovered or personally promoted the supposed ritual, despite no reliable evidence of their involvement.
The promised recipe is often deliberately withheld. Instead of providing a straightforward explanation of how to prepare the drink, the presentation gradually introduces a supplement that viewers are encouraged to purchase.
How the Fake AI Videos Work
The campaign uses the credibility of recognisable people to make questionable health claims appear trustworthy. A video might begin with what looks like a genuine podcast conversation. A celebrity appears to discuss weight struggles, stubborn belly fat or a surprising discovery about metabolism. The conversation then shifts towards a matcha-based method that supposedly produces significant weight loss without restrictive dieting or strenuous exercise.
The viewer is encouraged to keep watching because the exact recipe is supposedly about to be revealed. Some versions use lengthy presentations, testimonials and dramatic before-and-after photographs to reinforce the story. Eventually, the promised solution becomes a supplement rather than an ordinary matcha recipe.
This is important because the celebrity footage is not simply an exaggerated advertisement. It creates a false impression that recognizable public figures have personally tested, recommended or endorsed a commercial product. The Federal Trade Commission has previously warned about fabricated celebrity endorsements using manipulated video and audio.
Which Products Are Behind the Videos?
One of the products identified in investigations of the campaign is Leaftide, a weight-loss supplement promoted through a website and associated sales pages. However, the product trail becomes confusing. A September 2026 investigation by MalwareTips reported that purchase buttons on a Leaftide promotional page redirected customers to a separate checkout page selling KeySlim Drops.
A subsequent investigation described KeySlim Drops as the new product destination associated with the campaign. This creates a significant transparency problem: someone who believes they are ordering one supplement may end up on a checkout page for a different product.
The available evidence does not establish that every website using the Leaftide name is operated by the same people responsible for the fake videos. Nor does it establish that every product carrying that name is identical. These distinctions matter when investigating the sellers and their products.
Does Matcha Actually Cause Weight Loss?
Matcha is powdered green tea and contains naturally occurring compounds, including caffeine and catechins. Research into green tea and weight management has explored whether these compounds can have modest effects on energy expenditure and fat metabolism. That does not mean matcha is a powerful weight-loss treatment.
There is no established secret matcha recipe that produces dramatic weight loss, replicates prescription GLP-1 medication or allows someone to lose substantial amounts of body fat without other changes.
The NIH Office of Dietary Supplements notes that scientific evidence supporting many weight-loss supplements is limited. Claims that a product can produce rapid, substantial weight loss should therefore be treated with considerable skepticism.
The distinction is simple: drinking matcha is not inherently suspicious. Using fabricated celebrity endorsements and unsubstantiated medical claims to sell a supplement is an entirely different matter.
Red Flags Identified
Fabricated endorsements: The campaign uses the likenesses of public figures to imply support that has not been established. This is particularly concerning because consumers may trust a product based on the apparent recommendation of someone they recognize.
The product identity changes during the purchase process: The reported Leaftide-to-KeySlim checkout redirection makes it difficult for consumers to establish exactly which product they are purchasing and who is responsible for the transaction.
Unsubstantiated GLP-1 comparisons: Suggesting that a matcha drink or supplement can reproduce the effects of prescription weight-loss medication is a serious claim that requires strong clinical evidence.
The promised recipe becomes a sales pitch: Viewers are drawn in by the prospect of learning a simple preparation method, but the presentation ultimately directs them towards a paid supplement.
Limited evidence of product effectiveness: The advertising narrative and testimonials do not establish that the supplements produce the claimed results. Product-specific clinical evidence would be needed to support those claims.
Is the Matcha Weight Loss Campaign a Scam?
The fake endorsement campaign is deceptive. The use of manipulated celebrity footage, unsupported weight-loss claims and confusing product redirects provides substantial grounds to warn consumers against trusting the advertisements.
However, it is important to distinguish the campaign from every business or product name that may appear in its sales funnel. The available investigations do not establish that every seller using the Leaftide name is responsible for the fake videos, or that every customer receives no product.
The most defensible conclusion is that the advertising campaign is fraudulent in its presentation and should not be trusted as a legitimate celebrity recommendation or medical discovery. Consumers should avoid purchasing through these videos, particularly when the product changes between the advertisement and checkout.
Anyone who has already purchased should retain the advertisement, checkout page, receipt and correspondence. If the transaction involved an unexpected product or charge, they should contact their payment provider promptly and ask about their dispute options.
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