Get bitten by these ticks and you may end up with a red meat allergy

Most people think of tick bites as nuisances or, at worst, vectors for Lyme disease. But imagine waking up in the middle of the night with hives, your throat closing up, all because you ate some pork hours earlier.

That was Cathy Raley’s reality, according to reports from Science News, after a single tick bite left her with a severe red meat allergy, a condition known as alpha-gal syndrome.

Alpha-gal syndrome isn’t your typical food allergy. It's caused by a sugar molecule found in most mammalian meat, and this strange condition begins with a tick bite. The tick’s saliva introduces alpha-gal into the bloodstream, which can trigger a chain reaction in the immune system.

Weeks or even months later, eating beef, pork, lamb, or even dairy or gelatin, can provoke anything from an upset stomach to full-blown anaphylaxis. Until recently, the lone star tick was considered the only U.S. species capable of triggering alpha-gal syndrome.

However, new cases in Washington and Maine suggest otherwise. Scientists now believe that other tick species, like the blacklegged tick and the western blacklegged tick, may also be to blame. These findings could expand the map of risk far beyond the lone star tick’s southeastern stronghold, raising new concerns for hikers, campers, and even pet owners across the country.

This growing awareness is important because alpha-gal syndrome often goes undiagnosed. Its symptoms are delayed and can vary wildly from person to person. Many healthcare providers have never even heard of it, leading to frustrating misdiagnoses and prolonged suffering for patients.

There’s no cure for the condition, and while some people may eventually tolerate red meat again, the best protection remains prevention. That starts with avoiding tick bites altogether by wearing long sleeves and light-colored clothing when hiking.

Researchers also recommend that you treat your gear with permethrin, and always check yourself (and your pets) for ticks after spending any time outdoors. Even a tick that’s quickly removed can spark the syndrome, since the reaction isn’t caused by bacteria but by allergens in the tick’s saliva.

As climate change and shifting wildlife populations expand tick habitats, awareness is key, as some ticks are quite invasive. Alpha-gal syndrome may still be rare, but it’s becoming more common, and with a single bite, anyone can become a reluctant vegetarian.

The post Get bitten by these ticks and you may end up with a red meat allergy appeared first on BGR.

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Get bitten by these ticks and you may end up with a red meat allergy originally appeared on BGR.com on Sat, 26 Apr 2025 at 15:15:00 EDT. Please see our terms for use of feeds.