Behaviors such as exposure to air pollution, unhealthy diets, high intake of preservatives, fast food, stress, and lack of sleep are associated with developing food allergies.

“the one twin that develops a food allergy they're the ones that have been out in pollution more they've eaten not such a healthy diet they've lot of preservatives or they smoke uh and so or they eat a lot of fast food like it's so or they are under a lot of stress and they don't get a lot of sleep”