Mindfulness improves brain connectivity, MRI data show
Mindfulness-based stress reduction can alter the brain on a functional level, according to imaging data.
This approach combines meditation, bodily awareness exercises and yoga to temper stress and anxiety. These practices have been deployed as a means of addressing stress-related issues naturally, rather than relying on medication. But how exactly mindfulness tactics work is not fully understood, and research into their underlying mechanisms has yielded inconsistent results.
Recently, a team of experts compiled all available imaging research on how mindfulness techniques alter the brain on both structural and functional levels to provide an objective explanation on its effectiveness. Through MRI analyses, they determined the most likely source of related symptom improvements stems from connectivity in certain brain networks.
“Functional connectivity analysis measures the statistical interdependence of blood-oxygen dependent level signals on fMRI to identify brain regions with synchronized neural activity. Such regions have been further characterized into intrinsic connectivity networks that are present across virtually all patient populations.” Stacy Ruther, with the University of Arizona College of Medicine, and co-authors noted. “While these large-scale functional systems are consistently identified between patient populations, studies have shown inconsistent aberrations in the magnitude of activation of these regions in various psychiatric and neurologic disorders.”
The team reviewed all studies that included neuroimaging and mindfulness-based stress reduction published between 2009 and 2024; out of 586 articles, just 27 met inclusion criteria.
The available data on structural alterations derived from mindfulness were inconsistent, and most studies did not describe significant changes in gray matter. However, studies that incorporated functional MRI data revealed several changes in brain activity. Activation studies detailed increased activity in the superior parietal lobule, posterior cingulate cortex and prefrontal regions, while research focused on functional connectivity reported improved coupling between the medial prefrontal cortex and amygdala post stress reduction. These networks support emotion regulation, processing and attention.
“Together, these findings suggest that [mindfulness-based stress reduction] exerts its effects primarily by reshaping functional brain dynamics, rather than altering structure. By enhancing coordination across key networks, particularly those supporting attention, interoception, and emotion regulation, MBSR may improve an individual's capacity to engage with internal experience in a more adaptive, non-reactive way,” that authors explained. “These neural shifts mirror the core principles of mindfulness and may explain its growing role as an adjunct treatment for mood and stress-related disorders.”
Read more about the findings here.
In addition to her background in journalism, Hannah also has patient-facing experience in clinical settings, having spent more than 12 years working as a registered rad tech. She began covering the medical imaging industry for Innovate Healthcare in 2021.