Why does celery have a numbing effect? The surprising science behind the tingling sensation
                                
                                
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                                    4 min read                                
                            
                                Approximately 25% of people with hay fever experience Oral Allergy Syndrome, a condition where the immune system misinterprets food proteins, providing a crucial clue as to why celery has a numbing effect. This unusual sensation isn't cause for panic, but understanding its root causes is key to distinguishing a minor sensitivity from a more serious allergy.