Nearly 10 million American adults microdosed psychedelic substances such as psilocybin, LSD or MDMA in 2025, according to a new analysis.
The results of the RAND Corporation survey indicate that microdosing—which involves ingesting a small amount of a drug to improve mood and well-being without experiencing hallucinations or a full-scale trip—is a popular practice in the U.S.
“There is an emerging discussion about the effects of microdosing on creativity, well-being and mental health, but until now little was known about how common it is,” Michelle Priest, a RAND researcher who served as lead author of the new report, said in a press release on Wednesday. “Our findings suggest that for those who use psychedelics, taking small doses is a big deal.”
More than two-thirds (69 percent) of adults who used psilocybin in the last year said they microdosed at least once. Among MDMA consumers, 65 percent microdosed in the last year and 59 percent of LSD users did so.
Overall, RAND estimated that approximately 3.7 percent of U.S. adults—or 9.55 million people—microdosed psilocybin, MDMA and/or LSD in 2025.
The RAND paper also looks at psychedelics use more broadly, beyond microdosing—finding that the five most commonly used psychedelics were psilocybin (11 million
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