Why does one develop a food allergy later in life when it wasn't present as a child?

Question

Why does one develop a food allergy later in life when it wasn't present as a child?

Answer 1

The food allergy was probably their, just not reactive...sometimes eating too much of a food can freak the body out and cause dislike of the food and sometimes even an allergic reaction. I used to eat a lot of chinese food when I grew up (like 3 times a week) now I almost never eat it because I started getting severe allergic reactions to the MSG (a spice that is used on lots of foods, not just chinese foods).

Answer 2

your body goes through changes every seven years therefore you can develop allergies to some foods that you never had before  i was lactose intolerant and now can drink milk

its a weird world   !!!!