The Effects of Mindfulness-Based Interventions on Psychological Health: A Narrative Literature Review

Mindfulness-based interventions (MBIs) such as Mindfulness-Based Stress Reduction (MBSR) and Mindfulness-Based Cognitive Therapy (MBCT) are effective for reducing anxiety, depression, and stress. A narrative review of studies from 1982 to 2025 found clinically significant effects on anxiety (d = 0.63), depression (d = 0.59), and stress (d = 0.51). MBCT reduces depressive relapse risk by about 44% compared to usual care for patients with three or more prior episodes. Neuroimaging shows structural brain changes in the prefrontal cortex, insula, and hippocampus with sustained practice. Effectiveness depends on intervention duration, practice consistency, and baseline emotional regulation capacity.

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Abstract

Background: The global mental health crisis has intensified demand for effective, accessible, and evidence-based interventions. Mindfulness-based interventions (MBIs), most notably Mindfulness-Based Stress Reduction (MBSR) and Mindfulness-Based Cognitive Therapy (MBCT), have emerged as widely adopted psychotherapeutic approaches. Objective: This narrative literature review examines the theoretical foundations, psychological and neuropsychological mechanisms, and clinical evidence base for MBIs across diverse populations and settings. Methods: A narrative synthesis of empirical studies, meta-analyses, randomised controlled trials (RCTs), and theoretical articles was conducted. Literature was retrieved from PsycINFO, PubMed, and Cochrane databases (1982 to 2025) using search terms including mindfulness, MBSR, MBCT, psychological well-being, and emotional regulation. Studies were included if they reported psychological outcome data in human participants. Results: MBIs demonstrate consistent, clinically significant effects on anxiety (d = 0.63), depression (d = 0.59), and stress (d = 0.51). MBCT reduces depressive relapse risk by approximately 44% compared to treatment as usual in patients with three or more prior episodes (Kuyken et al., 2016). Neuroimaging evidence confirms structural changes in the prefrontal cortex, insula, and hippocampal regions associated with sustained practice. Conclusions: MBIs are robust, transdiagnostic tools for psychological health promotion. Key moderating factors include intervention duration, practice consistency, and individual differences in baseline emotional regulation capacity. Future research should prioritise long-term follow-up designs, cultural adaptations, and mechanistic dismantling studies.