Often, adults may experience a reaction to an allergy that developed in childhood, but for various reasons, such as changes in their immune system or the environment, the allergy returns, Kachru said.
A surprising factor in many adult allergies is the increased risk of anaphylaxis because people don’t have an EpiPen (an auto-injector that releases epinephrine into the body to reduce inflammation) on hand.
Even mild allergies can lead to anaphylaxis, which is impossible to predict, Kachru said, because a reaction depends on the amount of exposure, the state of your immune system and a previous history of allergic reactions.
“If it only takes one cashew to trigger an allergic reaction the first time, it may only take half a cashew to mount a response the next time, which will be more severe because you’ve primed your immune system,” Kachru said. By exposing yourself more.”