Last month, we reported on a fake social media post circulating claiming a cure for peanut allergy with just four injections. The post appeared credible, referencing a study from a well-known, reputable Canadian institute and featuring AI-generated text and graphics. However, the post was entirely fabricated to attract clicks.
Now, another social media post claiming a cure is spreading, this time asserting that a well-known, reputable Swedish institute has developed a cure for peanut allergy in a single dose:
Swedish researchers created vaccine eliminating peanut allergies permanently after single injection changing lives.
A single shot that erases peanut allergies forever sounds impossible, but Karolinska Institute scientists have done exactly that. After one injection, patients with life-threatening peanut allergies can eat peanuts safely within weeks—no more EpiPens, no more label reading, no more fear. The first trial participants are now eating peanut butter sandwiches after years of avoidance.
The vaccine uses modified nanoparticles carrying peanut proteins combined with immune-regulating molecules that retrain your immune system to recognize peanuts as harmless. Traditional allergy treatments expose you to tiny amounts repeatedly; this approach reprograms the actual immune cells causing the reaction. The nanoparticles target specific T-cells and regulatory cells, essentially teaching your body’s defense system that peanut proteins aren’t invaders. It’s like installing a software update that fixes a bug in your immune system’s threat detection.
Peanut allergies affect 1-3% of children worldwide and have tripled in the past 20 years—we don’t know why. Current treatments require years of carefully controlled exposure with constant risk of severe reactions. This single-dose cure means children can attend school without segregated lunch tables, parents can stop living in constant vigilance, and accidental exposures stop being potentially fatal. The technology also shows promise for other food allergies including tree nuts, shellfish, and dairy.
Phase II trial results show 89% of participants achieved complete tolerance, eating 4-5 peanuts without any reaction after a single injection. The effects have remained stable for over two years in early trial participants with no signs of wearing off. If we can cure one allergy with a single shot, what other immune system “errors” could we fix the same way?
Source: Karolinska Institute Department of Immunology, The Lancet 2025
Once again, it’s clear that AI was used to create this “breakthrough” report, offering information that initially appears to be based on science. That is, until the final sentence provides the reference: “Source: Karolinska Institute Department of Immunology, The Lancet 2025.“
Both the Karolinska Institutet and The Lancet are reputable sources for such information; the former is a world-renowned medical university, and the latter is one of the most respected medical journals. But there is no such study… it simply doesn’t exist.
We reiterate our warning to remain vigilant to these scams, rely only on reputable sources, verify references, and never try a new drug, supplement, or diet without first consulting your doctor.
Let us know if you come across clickbait meant to prey upon the food allergy or celiac communities. Our thanks to Matthew Persico for bringing this instance to our attention.
