Research shows that mindfulness improves psychological measures in both clinical and non-clinical populations. In one meta-analytic review (Chiesa and Serretti, 2009) mindfulness was found to reduce stress and trait anxiety while increasing empathy in a cohort without a medical or mental health diagnosis.
The first study to explore the brain changes in meditators found that experienced meditators had cortical thickening in areas related to emotional, sensory, and cognitive processing when compared to non-meditators (Lazar et al., 2005). Another study (Luders, Toga, Lepore, and Gaser, 2009) found that experienced meditators had greater cell volumes in the right prefrontal cortex, an area responsible for emotional regulation, than non-meditators.
With mindfulness we are teaching ourselves to pay attention with kindness to the present moment. It is a small behavioural change that can have a profound impact on how the body functions, and, ultimately, on our lives.
The 2009 Nobel Prize in physiology of medicine was awarded to Australian researcher Elizabeth Blackburn, along with Carol Greider, and Jack Szostak for the discovery of telomeres and telomerase. Telomeres are the caps on the ends of chromosomes where our genes reside, and telomerase is a protective enzyme.
Telomeres keep our chromosomes from aging, much like the little plastic bits on the tips of a shoelace keep it from unravelling. Cognitive stress and constant dwelling on potential threats creates a stressful environment that, in turn, shortens telomere length.
Mindfulness, however, can have a beneficial impact on telomere length by reducing cognitive stress and arousal, and that can decrease cellular aging (Epel et al., 2009).
The first study to document how meditation can change telomere length and therefore cellular aging recruited thirty participants who spent three months on meditation retreat and were compared to matched wait-list controls. The results indicated that decreases in negative affectivity and other positive psychological changes were linked to increased telomerase activity, telomerase being the enzyme responsible for telomere production (Jacobs et al., 2011). The meditation retreat changed cellular aging!
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