This Tick Bite Could Make You Allergic to Red Meat for Years

Most people associate tick bites with Lyme disease. But health experts are warning about another growing threat: alpha-gal syndrome, a meat allergy triggered by certain tick bites that can cause severe-and sometimes life-threatening-allergic reactions.

According to the Associated Press, roughly 450,000 Americans are estimated to have developed the condition.

Why a Tick Bite Can Trigger a Meat Allergy

Unlike other tick-borne illnesses, alpha-gal syndrome isn't caused by a virus or bacteria. Instead, it occurs when the immune system becomes sensitive to a sugar molecule called alpha-gal, which is found in most mammals.

The primary culprit in the U.S. is the lone star tick. When the tick bites, it can introduce alpha-gal into the bloodstream, prompting the body to produce antibodies that later react to red meat and, in some cases, dairy products.

"It turns out that the skin is a fantastic way to make an allergic response," Scott Commins, MD, PhD, an alpha-gal syndrome researcher at the University of North Carolina, told the AP.

The Symptoms Often Show Up Hours Later

One reason the condition can be difficult to diagnose is that symptoms don't always appear immediately after eating.

According to the AP, reactions can include hives, itching, stomach pain, diarrhea, swelling, difficulty breathing, and even anaphylaxis. Doctors diagnose the condition using symptoms, patient history, and blood testing.

The Simple Steps That Can Help Protect You

Experts say the best defense is avoiding tick bites in the first place.

• Use tick repellent when outdoors.
• Wear long sleeves and pants in wooded areas. Lightweight options like the Stio Men's Eddy Long Sleeve Shirt add breathable coverage that can help reduce skin exposure to ticks.
• Check your body for ticks after spending time outside.
• Remove ticks promptly with tweezers.
• Talk to a doctor if you develop allergic symptoms after eating red meat.

The good news: Commins told the AP that the allergy can fade in some patients over time. But avoiding future tick bites remains critical to reducing the risk of ongoing reactions.

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This story was originally published by Men's Journal on Jun 22, 2026, where it first appeared in the News section. Add Men's Journal as a Preferred Source by clicking here.

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This story was originally published June 21, 2026 at 7:25 PM.