What do the upper-level nutrition courses cover for material? Do they reflect on the basic food service classes that I am currently taking?

Upper level nutrition courses focus on Community Nutrition and on diseases as a consequence of nutritional problems. Everything connects together, and food service classes WILL eventually tie in to what you learn later on. Especially with Nutritional Problems in the US and Medical Nutrition Therapy, you will need to have a solid understanding of the chemistry behind foods and what particular qualities certain foods possess that can potentially have implications for people with certain diseases and medicines.