1. Introduction
  1.1 Background
  1.2 Significance of the Study
  1.3 Research Objectives

2. Literature Review
  2.1 Overview of Malnutrition
  2.2 The Immune System and its Functions
  2.3 Impact of Malnutrition on Immune Function
      2.3.1 Cellular and Humoral Immune Responses
      2.3.2 Impaired Innate Immunity
      2.3.3 Altered Cytokine Production
      2.3.4 Effects on Gut-Associated Lymphoid Tissue (GALT)
  2.4 Malnutrition and Susceptibility to Infections
  2.5 Malnutrition and Autoimmune Disorders
  2.6 Potential Mechanisms Underlying the Effects of Malnutrition on Immune Function

3. Methodology
  3.1 Study Design
  3.2 Selection of Literature
  3.3 Data Extraction and Analysis
  3.4 Inclusion and Exclusion Criteria

4. Results and Discussion
  4.1 Overview of Studies Included
  4.2 Effects of Protein-Energy Malnutrition on Immune Function
  4.3 Effects of Micronutrient Deficiencies on Immune Function
  4.4 Impact of Malnutrition on Specific Immune Cells and Pathways
  4.5 Potential Interventions to Improve Immune Function in Malnourished Individuals

5. Conclusion
  5.1 Summary of Findings
  5.2 Implications and Recommendations for Future Research
  5.3 Limitations of the Study