Meditation and ageing (part 2)

What’s more, research has also shown that it’s possible to slow the loss of our brain cells. Normally, we lose about 10,000 brain cells a day. That may sound horrible, but we were born with 1.1 trillion. We also have several thousand born each day, mainly in the hippocampus, in what’s called neurogenesis. So losing 10,000 a day isn’t that big a deal, but the net bottom line is that a typical 80 year old will have lost about 4 percent of his or her brain mass—it’s called “cortical thinning with aging.” It’s a normal process.

But in one study, researchers compared meditators and non-meditators. In the graph to the left, the meditators are the blue circles and the non-meditators are the red squares, comparing people of the same age. The non-meditators experienced normal cortical thinning in those two brain regions I mentioned above, along with a third, the somatosensory cortex.

However, the people who routinely meditated and “worked” their brain did not experience cortical thinning in those regions.