The conceptual framework encompasses the researcher's ideas focused on understanding and mastering the research topic, problem, questions, literature, theories, methodology, procedures, instruments, data analysis, interpretation of findings, recommendations, and conclusions in the fields of Public Health, Nutrition, and Dietetics. This review aims to retrospectively analyze activities and updates in the research field over the past 30 years. The main objective is to demonstrate the importance of the conceptual framework in research related to Public Health, Nutrition, and Dietetics. This framework is considered crucial in driving improvements in the health and well-being of mothers and children, which in turn has a direct impact on the sustainability of societal development. The conceptual framework is crucial as it provides a level of excellence that determines favorable results and influences the establishment of a benchmark for scientific study. Furthermore, it will affect improving the uniformity and comparability of research findings, while also ensuring that universally acknowledged standards and rules regulating scientific fields are established. The aim outlines the goals and purpose, whereas the fundamental details the methods to attain the study objectives in Public Health, Nutrition, and Dietetics.