npr:

As an ingredient, sesame is pretty popular— it’s in tahini and sushi; it’s often mixed in granola, sprinkled on bagels or used as a flavoring in an array of dishes. But according to new research, this may be a problem for a substantial number of Americans.

While previous studies suggested sesame allergies affected about .2% of U.S. children and adults, new research published this week in JAMA Open estimates the number of sesame-allergic Americans could be as high as .49% — around 1.6 million people.

The study’s findings come at a time when the FDA is considering adding sesame to its list of top allergens that must be noted on food packaging. Last October, then-commissioner Scott Gottlieb issued a request for information on the “prevalence and severity” of sesame allergies in the U.S. to aid in its decision.

Luckily, a team of researchers led by Dr. Ruchi Gupta, director of the Science and Outcomes of Allergy and Asthma Research Team at Northwestern Medicine, already had data on hand — information from a national survey of food allergies they conducted between Oct. 1, 2015, and Sept. 31, 2016. For this study, researchers distributed surveys on food allergy diagnoses and symptoms to nearly 80,000 different people in over 50,000 households. To meet Gottlieb’s request, all they had to do was pull out their sesame data and give it a look.

Read the full story here