Do you think you have a food allergy or do you KNOW you have a food allergy?
In a recent study of 40,000 adults, only half of the adults had actually been diagnosed by a doctor. The other half were self diagnosed.
The top 3 food allergies are shellfish, milk and peanut allergy.
7.2 million have a shellfish allergy, 4.7 million have a milk allergy and 4.5 million have a peanut allergy.
Source: https://www.theguardian.com/society/2019/jan/04/half-of-people-who-think-they-have-a-food-allergy-do-not-study