Chapter ONE

: Introduction 1.1 Introduction
1.2 Background of Study
1.3 Problem Statement
1.4 Objectives of Study
1.5 Limitations of Study
1.6 Scope of Study
1.7 Significance of Study
1.8 Structure of the Thesis
1.9 Definition of Terms

Chapter TWO

: Literature Review 2.1 Overview of Probiotics in Human Nutrition
2.2 Gut Health and Immune Function
2.3 Effects of Probiotics on Older Adults
2.4 Previous Studies on Probiotics and Gut Health
2.5 Benefits of Probiotics in Aging Population
2.6 Challenges in Probiotic Research
2.7 Role of Diet in Gut Microbiota
2.8 Impact of Probiotics on Immune Response
2.9 Mechanisms of Action of Probiotics
2.10 Current Trends in Probiotic Research

Chapter THREE

: Research Methodology 3.1 Research Design
3.2 Sampling Techniques
3.3 Data Collection Methods
3.4 Data Analysis Procedures
3.5 Ethical Considerations
3.6 Validity and Reliability
3.7 Pilot Study
3.8 Statistical Tools Used

Chapter FOUR

: Discussion of Findings 4.1 Demographic Characteristics of Study Participants
4.2 Effects of Probiotics on Gut Health
4.3 Impact of Probiotics on Immune Function
4.4 Comparison with Previous Studies
4.5 Interpretation of Results
4.6 Implications for Practice
4.7 Recommendations for Future Research

Chapter FIVE

: Conclusion and Summary 5.1 Summary of Findings
5.2 Conclusion
5.3 Contributions to the Field
5.4 Limitations of the Study
5.5 Recommendations for Practice
5.6 Suggestions for Further Research