As part of this study, the researcher has utilized certain theories in order to explain the further study regarding the effects of junk food in the health of school-going children. There is an in-depth analysis of multiple sources in this paper, so understanding how these theories can help build the proposed research and deepen understanding will be better understood. In this paper, we analyze whether a theoretical framework can provide researchers with a strong foundation as well as how it can be used as a research tool.