Background: Training needs assessment is the process of identifying educational needs. The project aims to determine the priorities of nutrition-related health problems in the Southwest of Iran through training needs assessment. This process designed to review the nutrition course plan based on the community needs, implementation, and evaluation to identify the potential strengths and weaknesses of the considered course plan from the students’ perspectives. Methods: The study was designed in five phases: 1) needs assessment by using Nominal Group Technique, 2) review of nutrition course plan, 3) implementation of revised nutrition course plan, 4) qualitative evaluation of the new course plan by students, and 5) comparison of the grade of the students in the new course by students in the previous course. Behavioral and non-behavioral causes of the nutrition-related health problem priorities were determined using the nominal group technique. A review of the nutrition course plan was done. A revised course plan was implemented for medical and nursing students in two semesters. A conventional content analysis was applied to analyze the qualitative data obtained from the students' semi-structured interviews. The mean of semester exam scores was compared between the students trained with the revised course plan and the previous one by one-way ANOVA.Results: The conventional content analysis identified three major themes: perfect educational content, shortcomings, and strategies. Medical students trained with the revised course plan in the first semester obtained a higher semester exam score compared to the students trained with a revised course plan in the second semester. Also, semester exam scores were higher among nursing students trained with the previous course plan compared to the students trained with the revised one (p<0.05). Conclusions: Needs assessment provides an opportunity for a community-based review of the nutrition course plan. Evaluation of the implementation of the revised course plan allowed the students to state experiential learning that enables them to identify the educational needs as future employees and explore shortcomings and strategies to improve the medical education programs.