Why are undigested foods not considered as excretory wastes

Mr. smith, a 57-year-old patient, presents at a health fair asking questions about the age-appropriate health maintenance and promotion considerations he should be concerned about. he stated that he only goes to his physician when he is sick and the last time he saw his physician was 2 years ago when he had a sinus infection. a. what further assessment does the nurse need to make before designing a teaching plan? b. what topics does the nurse need to include for mr. smith based on current medical recommendations? c. design a teaching plan that covers the topics.