The food you eat contains 3 main nutrientsâfat, protein, and carbohydrates. Your body uses these nutrients to help give you energy to function. FAT. is found in foods like nuts and cheese. PROTEIN. comes from foods like meat, poultry, and fish.CARBOHYDRATES. can be found in bread and pasta.our doctor may start you on a prescription treatment called pancreatic enzyme replacement therapy, or PERT. PERTs are the main treatment for EPIâthey replace the digestive enzymes that your pancreas isnât producing anymore. When taken with food, PERTs help break down the nutrients in food.