Do you ever use food to "fill yourself up", when you're not physically hungry? I sure do!
Recently I've had a difficult period of waiting to have a medical procedure. The waiting is a lot harder than the procedure itself will be, I'm sure. I find myself eating when I'm not at all hungry, and at other times not eating when I AM hungry. I've been asked how this works for me; do I overeat when I'm upset or not eat? Well, I guess the answer is it varies a lot.
I am aware, though, that I'm using food to "fill" that space that holds my anxiety.