Allergy ?

I’ve been eatin’ egg whites for several years but a few weeks ago I started getting really bad gas that wouldn’t go away until I dropped the whites.

Is it possible to become allergic to a food or would one be allergic from the day they were born?

I do beleive yes in some cases you can become intolerant to a food, usually milk. Id look for something else though that was along for nthe ride that was different.