New Girl actress and singer Zooey Deschanel isn't new to living with allergies. The sitcom star has been open about her allergy issues for years. She's reportedly allergic to eggs, dairy, and gluten, found in wheat, rye, and certain other grains — common allergies in people. Deschanel recently took to Twitter to vent about her allergies, writing, "My allergy pill to cups of coffee ration is WAY off today. WAY OFF, you guys."