Yes, it is true.
You can find more information by searching Google using keywords:
"glial cells and opiates"
There is quite a bit of information accruing in the past 5 or so years about opiate tolerance in the brain.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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