This is a strange one.
Alpha-gal syndrome (AGS) is an allergy to a sugar molecule called galactose-α-1,3-galactose, or alpha-gal. It is triggered by tick bites, most often from the Lone Star tick, and can cause delayed allergic reactions to mammalian meat. Recognition of AGS increased after researchers developed a test for IgE antibodies to alpha-gal while investigating severe reactions to the drug cetuximab. The condition is known in parts of the southern United States but is emerging in areas where the tick is spreading.
The following is a summary of a case report published in The Journal of Allergy and Clinical Immunology: In the summer of 2024, a 47-year-old airline pilot went on a camping trip with his family. That night he ate beef for dinner, which was unusual for him. A few hours later, he woke with severe abdominal pain, vomiting, and diarrhea, but the symptoms subsided, and he seemed fine the next morning. He did not seek medical attention, though he later told his son he thought he was going to die.
Two weeks later, he ate a hamburger at a barbecue. Several hours after eating, he suddenly collapsed and became unconscious. Despite resuscitation efforts, he was pronounced dead at the hospital. The autopsy did not show obvious abnormalities in the heart, lungs, or other organs. Blood tests revealed low total IgE but a positive IgE for alpha-gal and beef, and postmortem tryptase levels were extremely high, consistent with fatal anaphylaxis.
His wife reported that he had previous “chigger” bites during the summer, which were likely Lone Star tick larvae. These ticks are known to cause sensitization to alpha-gal. The case is significant because it is the first well-documented death from AGS after eating mammalian meat, and the reaction occurred about four hours after eating, which is typical for this allergy.
Other factors, such as drinking beer, being exposed to pollen, and exercising, may have contributed to the severity, but they were not the primary cause. Importantly, the first episode of abdominal pain had not been recognized as an allergic reaction, so he had no reason to avoid meat.
This case highlights several key points:
- Both tick larvae (“chiggers”) and adult ticks can trigger alpha-gal sensitization.
- Allergic reactions in AGS often occur 3–5 hours after eating mammalian meat.
- Severe abdominal pain can be the main or only symptom of this allergy.
- Awareness of AGS is limited among both the public and healthcare providers, especially in areas where the Lone Star tick is spreading.
With increasing deer populations and the northward movement of Lone Star ticks, more people may be unknowingly at risk.
This case is a bizarre and tragic story, but it reminds us how something as small as a tick can completely upend a life. The Centers for Disease Control and Prevention estimates that nearly 450,000 people in the United States may be affected by alpha-gal syndrome. The true number could be even higher, since some people only have mild reactions, and unlike most allergies, symptoms appear hours after eating mammalian meat, making it harder to recognize.
In this case, the Lone Star tick turned an ordinary steak dinner into a deadly “Lone Star Steakhouse” of its own.
*****************************************************************************************
Also check out: New Study links Higher Coffee Consumption to Lower Mortality
*****************************************************************************************
You can contact Dr. Eeks at bloomingwellness.com.
Follow Eeks on Instagram here.
Or Facebook here.
Or X.
On Youtube.
Or TikTok.
SUBSCRIBE to her WEEKLY newsletter here! (For the stuff I don’t post publicly)