Oh, BTW, stress doesn’t help me. I only eat more. You sound like my slender son-in-law who loses his appetite when he is ill or stressed out.
It started during the endless Bush/Gore 2000 election ... I couldn't eat for a week. Then after the first 8 or 10 pounds went away that motivated me to restrain what I ate. Then the death of a child took care of the rest. I know some people eat when they are stressed and I feel for them. You find comfort any way you can. My stomach goes into tight knotted mode when I'm going through it so food becomes the least of my interests. We're all different.