 He found microdosing-related searches grew by more than 1,000 percent between 2015 and 2023, and that in recent years, interest in psilocybin outpaced LSD. Of course, search history cannot prove people are seeking out the drug. However, Lee says his lab has shown it can be a pretty reliable gauge of drug use, for example, with cannabis products. It's not perfect. It's a proxy measure. But it gives you a general sense, in the absence of other measures, what trends might be going on.