Literature Review is an objective summary of what the scientific literature says about your specific topic or question. In this kind of paper, you demonstrate your familiarity with pertinent work in the field. The literature review gives the research history, upon which later research can be built. The Literature Review is Not a Research Paper.

For example, the research question of the paper should be "What have researchers learned about the impacts of the keto diet? Are the impacts the same to females and males? What benefits have researchers found of the ketogenic diet?