Alpha-Gal Syndrome (AGS) is a potentially dangerous meat allergy that can suddenly make people react to beef, pork, lamb, dairy, gelatin, and other products made from mammals. Reactions can range from hives and severe stomach symptoms to life-threatening anaphylaxis, often appearing several hours after eating. And the condition is rising at an extraordinary rate: among adults being tested for alpha-gal antibodies, positive results increased roughly 100-fold between 2013 and 2024. A separate 2026 CDC study found alpha-gal antibodies in 24% of adults across five high-burden states.
To investigate what may be driving this surge, we conducted one of the most comprehensive reviews of Alpha-Gal Syndrome to date. Our new 104-reference paper, “Risk Factors, Pathogenesis, and Management of Alpha-Gal Syndrome,” is a major collaboration between researchers from the McCullough Foundation and The Wellness Company. It examines the causes, mechanisms, prevention, and treatment of AGS and raises a major overlooked question: could vaccine-derived alpha-gal be contributing to this explosion?
The Vaccine Connection
For years, tick bites have largely been assumed to explain Alpha-Gal Syndrome. But that explanation leaves several major questions unanswered. Tens of millions of Americans are bitten by ticks, yet only a minority become sensitized and only a fraction of those individuals develop clinical disease. Even the amount of alpha-gal actually delivered by a feeding tick has never been measured.
At the same time, more than 90% of U.S. children are exposed to alpha-gal-bearing mammalian gelatin through routine vaccination. A child completing the two-dose MMR and varicella schedules receives approximately 54 mg of mammalian gelatin by injection before school entry.
Eating mammalian products normally trains the gut to tolerate alpha-gal. Injection bypasses that pathway and introduces the material directly into immune compartments capable of promoting sensitization.
Hellbound and Down 