This essay addresses the global health threat of Type 2 Diabetes Mellitus (T2DM) and the challenges nursing professionals face in its effective management. It highlights the increasing prevalence of diabetes, the lack of nursing knowledge in diabetes prognosis, and the impact on the 'Common Good'. The essay emphasizes the need for improved nursing training, focusing on communication, blood glucose monitoring, and early complication detection. It advocates for on-job training, the use of tools and eLearning modules, and the importance of nurses as patient advocates to promote informed decision-making and self-management. The essay concludes that by optimally training and educating nursing professionals, the global threat of diabetes can be reduced while upholding human rights and the concept of solidarity, ultimately improving patient outcomes and contributing to the 'Common Good'.