> ## Content Index
> Fetch the complete content index at: https://www.astronaria.com/llms.txt
> Use this file to discover other available public pages before exploring further.

# Eight Weeks of Meditation, Measurable Changes: Revisiting a Landmark Study
- URL: https://www.astronaria.com/meditation-brain/
- Published: 2026-09-30T11:00:00.000Z
- Updated: 2026-09-30T11:00:00.000Z
- Description: In 2011, researchers used MRI to compare brains before and after a mindfulness course. What they found helped move meditation from the fringe to the mainstream.
- Author: Astronaria Editors
- Tags: Science & Consciousness, Neuroscience, #member, #Import 2026-10-01 19:31

The study, led by Britta Hölzel and colleagues at Massachusetts General Hospital, scanned participants before and after an eight-week Mindfulness-Based Stress Reduction program. They reported increases in gray matter concentration in regions linked to learning, memory and emotional regulation.

Later research has refined, and sometimes questioned, the size of those effects, which is how science is supposed to work. What has held up is the broader finding that a regular practice changes how people experience stress.