Stay Curious

SIGN UP FOR OUR WEEKLY NEWSLETTER AND UNLOCK ONE MORE ARTICLE FOR FREE.

Sign Up

VIEW OUR Privacy Policy


Discover Magazine Logo

WANT MORE? KEEP READING FOR AS LOW AS $1.99!

Subscribe

ALREADY A SUBSCRIBER?

FIND MY SUBSCRIPTION
Advertisement

450,000 Americans May Have A Meat Allergy Caused By Tick Bites

The CDC reports that cases of alpha-gal syndrome have spiked in the U.S. Find out how saliva from lone star ticks can cause permanent problems at the dinner table.

ByJoshua Rapp Learn
Credit: Jay Ondreicka/Shutterstock

Newsletter

Sign up for our email newsletter for the latest science news

Sign Up

A single bite from a tick can cause a permanent allergy to pork, beef and other kinds of red meat.

This condition is increasing in the United States, with a jump in positive test cases from 2017 to 2021, according to the U.S. Centers for Disease Control and Prevention (CDC). According to the CDC, as many as 450,000 people in the U.S. have been estimated to have been infected with alpha-gal syndrome, which can cause an assortment of symptoms when they eat red meat.

The connection between a tick bite and a meat allergy might seem baffling at first. How is it possible that a bite from such a small creature can ruin a lifetime of barbecues? Scientists suspect that it has to do with special sugar molecules found in lone star tick saliva, which humans don’t carry — but most other mammals do.

The range of the lone star ...

  • Joshua Rapp Learn

    Joshua Rapp Learn is an award-winning D.C.-based science journalist who frequently writes for Discover Magazine, covering topics about archaeology, wildlife, paleontology, space and other topics.

Stay Curious

JoinOur List

Sign up for our weekly science updates

View our Privacy Policy

SubscribeTo The Magazine

Save up to 40% off the cover price when you subscribe to Discover magazine.

Subscribe
Advertisement

0 Free Articles