Maintaining a healthy diet is an important strategy in public health to prevent chronic disease states. Providing nutritional therapy to hospitalized patients at high nutritional risk helps mitigate the deterioration of nutritional status and improve clinical outcomes. Despite the expectations of patients and members of the general public that physicians should serve as experts in clinical nutrition, their education remains relatively insufficient in this regard throughout their training from medical school through postgraduate studies. This creates a gap between the expertise needed to optimize benefits from nutritional therapy and the lack of training and knowledge base in physicians expected to provide that expertise. This chapter will discuss the importance of nutritional education in lifestyle medicine, address the reasons for gaps between the need for skills in nutritional management and the lack of training to prepare physicians for that responsibility, and provide solutions for closing those knowledge gaps in the future.