Allergies (Food intolerances) can "pop" up later in life. What happens is that you eat the same foods over and over again for years, and your body finally says enough, and starts rejecting that food.

Wheat is in everything.... I have a wheat intolerance.

Sugar is in everything...... Feel tons better when not eating sugar

I also have other food intolerances...because they were my favorite foods for a long time.... my body now rejects. If I eat too many tomatoes my fingers feel like I have arthritis. If I eat anything with wheat in it I get a runny nose and a bloated stomach. I eat mushrooms ...well look out.. I have to run to the washroom.

So, yes.... food intolerances (allergies) can pop up later in life.

I hope this information is helpful. Best of luck with everything!!