Is it true that thin people really have personalities like this? My friend is very sensitive

People who are sensitive like me feel like they're going crazy because of stress.
First, the enteritis and diarrhea are driving me nuts. I'd eat once a day, but then one day, my body sends a signal that I'm literally going to die.
Then I have diarrhea, and because my body has no nutrients, I end up wolfing down a whole bag of Saewookkang (shrimp crackers) before falling asleep from exhaustion.
Then I can't sleep well, I wake up in the middle of the night, and I'm not hungry again the next day—it just keeps repeating like this.
People who don't eat meals on time have incredibly sensitive personalities.
In those moments, I should order something like jokbal (pig's trotters), but the uniquely greasy, sticky texture of the fat is too nauseating to eat.
It's not like I'm making sure to eat vegetables or anything. I just feel like I'm going to collapse if I don't eat, so I end up cursing to myself before bed while eating shrimp crackers and going to sleep.
Because I'm so sensitive, I fight like crazy with my family too.
Someone sent me a message saying that people who are chubby don't deal with stuff like this.