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Harvard neuroscientist Sara Lazar: Meditation not only reduces stress, but also changes your brain.

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Science shows meditation literally changes the brain.

Q: What did you find?

Lazar: We found differences in brain volume after eight weeks in five different regions in the brains of the two groups. In the group that learned meditation, we found thickening in four regions:

1. The primary difference, we found in the posterior cingulate, which is involved in mind wandering, and self relevance.

2. The left hippocampus, which assists in learning, cognition, memory and emotional regulation.

3.  The temporo parietal junction, or TPJ, which is associated with perspective taking, empathy and compassion.

4. An area of the brain stem called the Pons, where a lot of regulatory neurotransmitters are produced.

The amygdala, the fight or flight part of the brain which is important for anxiety, fear and stress in general. That area got smaller in the group that went through the mindfulness-based stress reduction program.

The change in the amygdala was also correlated to a reduction in stress levels.

[Related: Science shows that stress has an upside. Here’s how to make it work for you]

Q: So how long does someone have to meditate before they begin to see changes in their brain?

Lazar: Our data shows changes in the brain after just eight weeks.

In a mindfulness-based stress reduction program, our subjects took a weekly class. They were given a recording and told to practice 40 minutes a day at home. And that’s it.

Q: So, 40 minutes a day?

Lazar: Well, it was highly variable in the study. Some people practiced 40 minutes pretty much every day. Some people practiced less. Some only a couple times a week.

In my study, the average was 27 minutes a day. Or about a half hour a day.

I'm trying to get Joyce to see that meditation isn't some random hippie recommendation.

It's actually exercise for the brain!

and it's kind of hard to do!

I wonder if it gets easier with practice. 

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