This came across my computer today, I thought I would share because it is quite fascinating. Another indication that staying in a good space in your mind, heart, and soul, no matter what you do-CAN make a difference: http://www.feelguide.com/2014/11/19/harvard-unveils-mri-study-proving-meditation-literally-rebuilds-the-brains-gray-matter-in-8-weeks/ 

Dr.M