It happens that you want to eat something that is not typical for you. Or constantly want a lot of certain foods in large quantities, and we begin to eat a lot of sweet, sour or salty. And we get noticeable pleasure from this food. This means that some problems have begun in the internal state.
Yes, food is an accurate indicator, because modern people have such a feature as "stress seizing." And according to the taste of food, you can determine what type of stress a person experiences.