Nearly 15 million people are affected by food allergies in the U.S. alone and that number is increasing.
Research shows that among children, food allergies have spiked by at least 50 percent since the 1990s.
According to the CDC, just over 5 percent of those 18 and under have at least one food allergy. Allergies to milk, eggs, peanuts and fish are typical.
But allergies to sesame, found in many foods but not required to be included on ingredient labels, is on the increase.
Common sources of sesame include: