Here's a thread to post about sensitivities and reactions you have to certain foods.
When I eat peanuts, I get VERY stinky gas .
When I eat sugary chocolate, very salty foods and cooked oils I often get headaches. Potato chips (which I LOVE but avoid for multiple reasons) almost certainly trigger an unpleasant response.
When I eat salty foods (even in moderation) in combination with nightshades when I have PMS, I often get headaches and retain LOTS of water. My breasts also go up an entire cup size if I eat salty foods when I'm PMS-ing or as the case may be
When I eat processed low protein foods like boxed cereals, I often get very sleepy (blood sugar response).
When I ingest "hydrolyzed soy protein" or heavily processed soy (fake "meats") I often have rapid heart rate, stuffy nose and headache.
When I eat too much nutritional yeast, I become dehydrated, achy and my throat becomes red and swollen.
When I drink beer (yes even just one) I rapidly put on weight and retain water and certain ones cause a bright red blotchy flush on my face and chest.
Because I have these reactions, (and because most of these foods aren't healthy to begin with) I seldom eat most of these foods.