Treatments That Work: The Impact of Mindfulness-Based Cognitive Therapy on Major Depressive Disorder

Mason Bradford, Emory University • January 3, 2025

         Depression is a widespread and debilitating mental health issue with profound consequences for individuals, society, and the economy (Kessler et al., 2003; König et al., 2020; Moussavi et al., 2007). A key feature of depression is the diminished ability to experience positive affect and positive emotions, with anhedonia (a reduced interest in or pleasure from previously rewarding activities) being a central symptom of the condition (Dunn, 2012; Dunn, 2019).

         Dunn and colleagues aimed to explore alternatives to the most common approach to depression which is Maintenance antidepressant medication (M-ADM) (Moriarty et al., 2020). The reason to explore alternatives is because taking antidepressants can have several downsides, including struggles to repair anhedonia and M-ADM requires lifelong maintenance to remain effective (Moriarty et al., 2020, Alsayednasser et al., 2022; Dunn et al., 2020).

         This study focuses on the potential effectiveness of Mindfulness Based cognitive therapy with support to taper from antidepressant medication (MBCT - TS) as an alternative to M-ADM, in reducing the risk of Relapse. The alternative is also focused on prioritizing positive affect levels (Dunn et al. 2024) given that low levels of positive affect have been shown to predict an increased risk of depressive relapse/recurrence in the past (Dunn et al. 2020, 2024).

Methods:       
        The study used a single-blind, randomized controlled trial to examine the effectiveness of MBCT-TS (Mindfulness-Based Cognitive Therapy with Tapering Support) compared to ongoing M-ADM (Maintenance Antidepressant Medication) in preventing depressive relapse/recurrence

         A total of 424 participants with a history of at least three depressive episodes, but not currently in an episode, were randomly assigned to one of the two treatment groups. The MBCT-TS group completed eight weekly 2.5-hour sessions, with up to four optional refresher sessions the following year, and began tapering or discontinuing medication after the fourthsession. The M-ADM group maintained their antidepressant regimen under medical supervision for the duration of the study.

         Data collection involved assessing Positive Affect (PA) through the joy and contentment subscales of the Dispositional Positive Emotions Scale (DPES). Depression severity was measured using the Hamilton Depression Rating Scale (GRID-HAMD), and mindfulness levels were evaluated with the Five Facet Mindfulness Questionnaire (FFMQ). Participants’ formal meditation practices were also tracked on a 4-point scale. Depressive relapse/recurrence was monitored at 9, 12, 18, and 24 months.

Results:

          Dunn et al, found that MBCT-TS shows strong potential as an alternative to M-ADM for minimizing depressive relapse in individuals with recurrent depression. MBCT-TS was found to significantly boost positive affect, which includes feelings like joy and contentment, compared to M-ADM. As positive affect plays a key role in guarding against relapse, individuals with higher baseline positive affect levels were shown to have greater resilience. This indicates that the therapy not only supports medication tapering but also enhances emotional well-being, helping reduce the risk of relapse


          Nevertheless, the study has its limitations. It remains uncertain whether improvements in positive affect were directly due to MBCT-TS, the tapering process, or a combination of both. Furthermore, the participant pool was predominantly white individuals from Britain, which may restrict how broadly the findings can be applied. Despite these challenges, the results align with existing theories emphasizing the importance of positive affect in fostering resilience. Enhancing future MBCT-TS programs by focusing more on strategies to cultivate positive affect could amplify its effectiveness.

Why this Matters:

         These results are important because they strengthen the validity of alternative treatments for depression that reduce risk of relapse. This is especially useful for patients that don’t wish to take medication the remainder of their lives. To taper off of M-ADM’s without increasing the risk of relapse, can be very important to people, as M-ADM’s can be a financial burden and can create serious side effects. Additionally, this literature provides promising evidence for holistic approaches, which work to bridge the gap between eastern medicine and western philosophy.


Author:

Mason Bradford, Emory University


Editor:

Elaine Johnson, PhD.


Article Reviewed:

Dunn, B. D., Warbrick, L., Hayes, R., Montero-Marin, J., Reed, N., Dalgleish, T., & Kuyken, W. (2024). Does mindfulness-based cognitive therapy with tapering support reduce risk of relapse/recurrence in major depressive disorder by enhancing positive affect? A secondary analysis of the PREVENT trial. Journal of consulting and clinical psychology, 92(9), 619–629. https://doi.org/10.1037/ccp0000902

By Sarang Arun, Biology Major, Emory University January 6, 2025
A review of the randomised controlled trial with mediation analysis published by Freeman et al, 2017, exploring the effects of improving sleep on mental health (OASIS)
By Kiyan Afkhami, Emory University January 5, 2025
A review of the cross-sectional study published by Wang et al., 2020, exploring the association between sleep duration and quality and depressive symptoms among university students
By Teddy Chen, Emory University January 2, 2025
A review of the study published by Fischer et al., 2020 exploring the relationship between irregular sleep and event schedules and poorer self-reported well-being in US college students.
Share by: