The Impact of Probiotics on Gut Health in Individuals with Irritable Bowel Syndrome: A Systematic Review and Meta-Analysis

Thesis Abstract

Abstract
This thesis explores the impact of probiotics on gut health in individuals with Irritable Bowel Syndrome (IBS) through a systematic review and meta-analysis. Irritable Bowel Syndrome is a common gastrointestinal disorder characterized by abdominal pain, bloating, and altered bowel habits. Probiotics, live microorganisms that confer health benefits when consumed in adequate amounts, have gained attention for their potential to alleviate IBS symptoms and improve gut health. However, the effectiveness of probiotics in managing IBS remains a subject of debate, necessitating a comprehensive evaluation through systematic review and meta-analysis. The introduction provides a background to the study, outlining the prevalence of IBS, its symptoms, and the potential role of probiotics in managing this condition. The problem statement highlights the gaps in current knowledge regarding the efficacy of probiotics in individuals with IBS, emphasizing the need for a systematic review to synthesize existing evidence. The objectives of the study are to evaluate the impact of probiotics on gut health parameters in individuals with IBS and to assess the overall effectiveness of probiotic interventions in managing IBS symptoms. The literature review synthesizes findings from previous studies investigating the effects of probiotics on gut health and IBS symptoms. Ten key themes emerge from the literature, including the mechanisms of action of probiotics, the strains most commonly used in IBS management, and the potential benefits of probiotics on gut microbiota composition and immune function. The review also discusses methodological considerations in probiotic research and identifies gaps in the current literature that warrant further investigation. The research methodology section outlines the systematic approach employed in this study, including search strategies, eligibility criteria for study selection, data extraction methods, and statistical analysis techniques for the meta-analysis. Eight key components of the research methodology are detailed, providing transparency and reproducibility in the review process. The discussion of findings chapter presents the results of the systematic review and meta-analysis, summarizing the impact of probiotics on gut health parameters such as symptom severity, bowel habits, and quality of life in individuals with IBS. Subgroup analyses explore the effects of different probiotic strains and dosages on outcomes, shedding light on the heterogeneity observed in probiotic studies. In conclusion, this thesis provides a comprehensive evaluation of the impact of probiotics on gut health in individuals with Irritable Bowel Syndrome. The findings suggest that probiotics may offer benefits in alleviating IBS symptoms and improving gut health, although further research is needed to elucidate the optimal probiotic interventions for different subtypes of IBS. This study contributes to the growing body of evidence supporting the use of probiotics as a potential therapeutic option for individuals with IBS, paving the way for future research and clinical practice in this field.