This calculus is reflected in the different treatments for PTSD we examined in the chapter on psychology. A one-day session with MDMA produces a marked decrease or abatement in symptoms, but you have to be willing to ingest an amphetamine to experience it. Five weeks of surfing—potentially less risky than a drug intervention—achieves a similar result, but entails learning a new sport in an unfamiliar and sometimes dangerous environment. Meanwhile, meditation—both simpler and safer than surfing—requires twelve weeks and offers a slightly lessened benefit. These three approaches produce a
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