Excerpt:

A new study published on Thursday in The American Journal of Psychiatry suggests that dosage may play a role. It found that among people who took high doses of prescription amphetamines such as Vyvanse and Adderall, there was a fivefold increased risk of developing psychosis or mania for the first time compared with those who weren’t taking stimulants.

Perhaps this explains some of what goes on at LessWrong and in other rationalist circles.

  • JackbyDev
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    2 months ago

    The researchers defined a high dose as more than 40 milligrams of Adderall, 100 milligrams of Vyvanse or 30 milligrams of dextroamphetamine. The medium dosage (20 to 40 milligrams of Adderall, 50 to 100 milligrams of Vyvanse or 16 to 30 milligrams of dextroamphetamine) was associated with a 3.5 times higher risk of psychosis or mania.