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Diminished Age-Related Decline of the Amygdala in Long-Term Meditation Practitioners.

Eileen Luders, Felipe A Jain, Florian Kurth

Psychosomatic Medicine DOI: 10.1097/psy.0000000000000913 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Observational cohort Peer reviewed
Sample size 100
Population Long-term meditators and healthy controls aged 24 to 77 years
Intervention Meditation
Topics Meditation
Key findings Age-related volume loss of the amygdala is less pronounced in long-term meditators compared with non-meditators.

Abstract

A growing body of scientific evidence suggests that meditation may slow brain aging. The amygdala-a heterogenous brain region known to decrease in volume with increasing age-seems to be involved in meditation and affected by meditation. Thus, we hypothesized that the age-related decline of the amygdala is diminished in meditation practitioners. We investigated whether correlations between age and gray matter volumes of the amygdala are significantly reduced in 50 long-term meditators compared with 50 sex- and age-matched healthy controls. Both the meditator and control groups included 44% women. The age of the participants ranged between 24 and 77 years, with mean (standard deviation) ages of 50.4 (±11.8) years in meditators and 51.4 (±12.8) years in controls. In addition to studying the amygdala as a whole, we investigated its centromedial, laterobasal, and superficial subregions using a well-validated approach combining imaging-based signal intensities and cytoarchitectonically defined probabilities. We detected significant group-by-age interactions for the whole amygdala and for its subregions. Follow-up analyses indicated negative age-related correlations in both meditators and controls (the older the participants, the smaller the volumes) but with significantly steeper aging trajectories in controls. Altogether, these findings suggest that the age-related volume loss of the amygdala is less pronounced in long-term meditators. This effect was particularly evident for the laterobasal subregion, which has been functionally linked to aspects of self-focused reflection.

Comparable studies

Other observational and cohort studies on meditation, most cited first.

Study Year Design Participants
Using Self-Report Assessment Methods to Explore Facets of Mindfulness Undergraduate students 2006 Observational cohort
Effectiveness of a meditation-based stress reduction program in the treatment of anxiety disorders Patients with generalized anxiety disorder or panic disorder with or without agoraphobia 1992 Observational cohort n = 22
Meditation experience is associated with increased cortical thickness Participants with extensive Insight meditation experience and matched controls 2005 Observational cohort n = 20
Meditation experience is associated with differences in default mode network activity and connectivity Experienced meditators and matched meditation-naive controls 2011 Observational cohort
Long-term meditators self-induce high-amplitude gamma synchrony during mental practice Long-term Buddhist practitioners and controls 2004 Observational cohort

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