A happy brain is a supple and flexible brain, he believes; depression, anxiety, obsession, and the cravings of addiction are how it feels to have a brain that has become excessively rigid or fixed in its pathways and linkages-a brain with more order than is good for it. On the spectrum he lays out {in his entropic brain article} ranging from excessive order to excessive entropy, depression, addiction, and disorders of obsession all fall on the too-much-order end. {Psychosis is on the entropy end of the spectrum, which is why it probably doesn't respond to psychedelic therapy.}
( Michael Pollan )
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