Final answer:
The Tucson, AZ dietitian works mostly with poor and underserved children, focusing on dietary and health issues prevalent in this population such as obesity and eating disorders.
Step-by-step explanation:
The Tucson, AZ dietitian primarily works with a poor and underserved population of children. This demographic often faces significant challenges related to obesity, which can lead to type 2 diabetes, as well as other eating disorders that are more prevalent in less affluent communities. Thus, the work of the dietitian focuses on addressing the dietary needs and health issues within this population to create positive health outcomes.