Participating in this study involves routine visits to M. D. Anderson at the ambulatory treatment center. Before you can start on this study, you will be asked about any allergies you may have. You will also be asked some questions about your caregivers, such as how many caregivers you have, whether your caregiver will be able to attend the nutrition class with you, and whether the caregiver will record the food intake information. You will be asked these questions to help the study researcher decide if you are eligible to take part in this study. It should take about 30 minutes to collect this data. Your caregiver will be present while this data is being collected. You will be asked to fill out questionnaires about your medical history, personal demographics (such as your name, age, race, and gender), and fatigue levels. These questionnaires should take about less than 1 hour to complete. The study researcher will collect these questionnaires and put them in an envelope with a code ID number on the front cover, instead of your name or other personal information.