the age-affected brain regions were much more extended in controls than in meditators, with significant group-by-age interactions in numerous clusters throughout the brain. Altogether, these findings seem to suggest less age-related gray matter atrophy in long-term meditation practitioners.

Podría ser causalidad inversa pero dada la plausibilidad fisiológica, es muy posible que sea causal.
Luders E, Cherbuin N and Kurth F (2015) Forever Young(er): potential age-defying effects of long-term meditation on gray matter atrophy. Front. Psychol. 5:1551. doi: 10.3389/fpsyg.2014.01551
http://journal.frontiersin.org/Journal/ ... 01551/full