TUCSON, ARIZONA -
Experts estimate as many as 15 million Americans have food allergies.
For years, the U.S. has mandated the top allergens be clearly marked on all foods.
While we know reactions to things like peanuts can be serious, there are other potential allergens that aren't necessarily labeled.
These ingredients can cause dangerous, even deadly, reactions to those at risk.
Alison Manhoff loves cooking with her son Hudson.
But prepping food is no piece of cake. Since he was little, Alison has known Hudson is allergic to a lot.
"He was allergic to peanuts and tree nuts," Manhoff said. "Eventually, we added eggs, dairy, soy."
And then sesame was added to that list.
It wasn't until Hudson accidentally ate a classmate's hummus, they found out just how serious that allergy could be.
"They immediately used an epinephrine device to provide emergency care and called an ambulance," Manhoff said.
Hudson had an anaphylactic reaction.
Manhoff now diligently reads labels.
The thing is, manufacturers aren't required to list sesame.
In fact, only the top eight allergens -- milk, eggs, fish, shellfish, tree nuts, peanuts, wheat...
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