Diplo says he ran a marathon while on LSD. You're not alone in wondering if that's a good idea. Here's what medical experts say about psychedelic use.

Diplo shocked Andy Cohen and Anderson Cooper by revealing he was on LSD during CNN's New Year's Eve special.

Among psychedelic enthusiasts, April 19 or Bicycle Day honors a mind-altering ride taken by the Swiss chemist who created LSD.

MATTHEW ORAM, Efficacy and Enlightenment: LSD Psychotherapy and the Drug Amendments of 1962, Journal of the History of Medicine and Allied Sciences, Vol. 69, No. 2 (APRIL 2014), pp. 221-250 ...