Some people eat everything. I call them eaters. Some others may restrict their diets by choice, choosing to eliminate meat for ethical reasons or choosing to follow a new diet. I call them choice-restricted eaters. Still others restrict their diets as required for their health. These include conditions like Crohn's disease, Celiac disease, diabetes and food allergies, as well as others. I call them health-restricted eaters.
I fall in the last category: I am a health-restricted eater as required by my food allergies. If I eat hot peppers or tree nuts, the reaction can range from uncomfortable at best to life-threatening at worst.