“Accumulating scientific evidence that meditation has brain-altering capabilities might ultimately allow for an effective translation from research to practice, not only in the framework of healthy aging but also pathological aging.” – Eileen Luders
The nervous system is a dynamic entity that changes in response to the experiences of the individuals and the demands they place upon it. This is a process called neuroplasticity. Contemplative practices place demands upon the brain and as a result produce neuroplastic changes increasing the size, activity, and connectivity of some structures while decreasing them in others (see http://contemplative-studies.org/wp/index.php/category/research-news/brain-systems/). In other words, contemplative practices appear to mold and change the brain.
We all want to live longer. We celebrate the increasing longevity of the population. But, aging is a mixed blessing. The aging process involves a systematic progressive decline in every system in the body, the brain included. It cannot be avoided. But, there is evidence that it can be slowed. Contemplative practices such as meditation, yoga, and tai chi or qigong have all been shown to be beneficial in slowing or delaying physical and mental decline with aging (see http://contemplative-studies.org/wp/index.php/category/research-news/aging/).
Using modern neuroimaging techniques, scientists have been able to view the changes that occur in the nervous system with aging. In addition, they have been able to investigate various techniques that might slow the process of neurodegeneration that accompanies normal aging. They’ve found that mindfulness practices reduce the deterioration of the brain that occurs with aging restraining the loss of neural tissue (see http://contemplative-studies.org/wp/index.php/category/research-news/brain-systems/). Indeed, the brains of practitioners of meditation and yoga have been found to degenerate less with aging than non-practitioners.
The structural changes that occur in the brain with aging involve a decrease in both grey matter, the neuron cell bodies, and white matter, the axons that interconnect structures. There have been numerous studies of the changes in grey matter that occur with aging and with contemplative practices, but there has been little research into changes in white matter. In today’s Research News article “Effects of Long-Term Mindfulness Meditation on Brain’s White Matter Microstructure and its Aging”
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4712309/
Laneri and colleagues performed diffusion tensor imaging (DTI) on a group of adult long-term meditators and a comparable group who had never meditated. DTI measures the volume, connectivity, and integrity of white matter. They specifically investigated five areas of the white matter that are connected to areas that had previously been shown to be affected by meditation practice.
They found that four of the five areas investigated, Thalamus, Insula, Amygdala, and Hippocampus had significantly higher volume and activation in the meditators relative to the control participants. In addition, the meditators did not show the age related decline in volume and activation in all five structures that was apparent in the non-meditators. In other words, long-term meditation practice appears to spare the connections between key structures in the brain from age related declines. This supplements previous findings of increases in grey matter volume in these areas in meditators.
These results, together with previous studies of meditation effects on the brain suggest that meditation not only increases the size of neural areas but also the size and activation of their interconnections. Hence meditation appears to result in improved function in these areas. Importantly, these results suggest that meditation practice also helps to maintain the integrity of these structures during aging. These may be the neural changes underlying the protection that meditation produces from cognitive decline that occurs in aging.
Hence, meditation is an anti-aging practice. It may help to keep our nervous systems healthier for longer and as a result keep our mental abilities sharp for longer. So, protect the brain from aging with meditation.
“There is a natural and easy method to turn aging on its heels that few people know about. It is the simple practice of meditation.” – EOC Institute
CMCS – Center for Mindfulness and Contemplative Studies