For me, it was stress that was causing the fluctuations in the way I could handle the so-called
allergies. I know when the body
is in flight-
or-fight, our immune system
is weakened and this can cause allergies to things we were normally never allergic to in the first place.
I do know that our allergies can change about every 3 to 5 years. They can also return for apparently no reason.
As to allergy to vegetable oils, yes, it is possible, especially if it is soy based.