If you have a nut allergy like Caleb does, the secret may be in your genes (Dr. Denise Daley)

At just one and a half years old, Caleb was taken to the hospital with welts up and down his body.

The cause? A small cashew that caused inflammations throughout his body, according to his mom Janey Yu.

“What we’ve discovered I think is really groundbreaking,” Dr. Denise Daley, principal investigator with the Centre for Heart Lung Innovation at St. Paul’s Hospital in Vancouver, told Global News.

Jesse Ferreras and Linda Aylesworth report

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