10/28/2026
Have you heard of alpha-gal syndrome (AGS)? It’s often referred to as a “red meat allergy,” and produces elevated histamine and allergy symptoms, such as hives, swelling, nausea and vomiting, breathing difficulty, and in severe cases, anaphylaxis. For those with primarily digestive symptoms, it can be mistaken for IBS.
AGS can develop after a bite from the Lone Star tick, making some essentially allergic to mammalian meat, including beef, pork, and venison. Some may even react to dairy, collagen, gelatin, carrageenan (a common food additive), and some animal-derived medications.
What’s so interesting about alpha-gal is that it’s a carbohydrate, whereas with most food allergies, the immune system reacts to a specific protein.
Your best defense against AGS is prevention. Take precautions when outdoors in tick-infested areas and check your skin afterward. If you’ve been bitten by a tick or suddenly develop a new allergy, seek treatment right away.
PMID: 36958889