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While mindfulness is typically geared towards improving mental health and well being, it may also provide additional benefits to brain health, according to a new systematic review and meta-analysis published in the journal Neuropsychology Review.
The positive effects of mindfulness-based programs on mental health are already relatively well-established,” said Tim Whitfield, a Ph.D. student in the Division of Psychiatry at University College London.
“Here, our findings suggest that a small benefit is also conferred to cognition, at least among older adults.”
Whitfield and colleagues reviewed previously published studies of mindfulness, and identified 45 studies that fit their criteria, which incorporated a total of 2,238 study participants.
Each study tested the effects of a mindfulness-based intervention delivered by a facilitator in a group setting, over at least four sessions, while excluding mindfulness retreats in order to have a more homogenous set of studies.
The majority of studies involved a certified instructor teaching participants techniques such as sitting meditation, mindful movement and body scan, generally on a weekly basis across six to 12 weeks, while also asking participants to continue the practices in their own time.
The researchers found that overall, mindfulness conferred a small but significant benefit to cognition.
Subgroup analysis revealed that the effect was slightly stronger for people over 60, while there was not a significant effect for people under 60.
“Executive function is known to decline with age among older adults,” Whitfield said.
“The improvement in people over 60 suggests that mindfulness may help guard against cognitive decline, by helping to maintain or restore executive function in late adulthood.”
“It might be easier to restore cognitive functions to previous levels, rather than to improve them beyond the developmental peak.”
When they investigated which aspects of cognition were affected, the scientists found that mindfulness was beneficial only to executive function, and more specifically, there was strong evidence of a small positive effect on working memory.
They also analyzed whether mindfulness outperformed other ‘active interventions’ — such as brain training, relaxation, or other health or educational programs — or only when compared to people who were not offered any alternative treatment.
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