“The first controlled LSD study in more than 40 years was released today in the Journal of Nervous and Mental Disease… The most common adverse events experienced by participants included: feeling cold, feeling abnormal, illusion, gait disturbance, and anxiety. However, participants experienced more anxiety with the placebo than with the LSD, which reinforces the idea that simply knowing one is taking the psychedelic drug can produce a negative psychological reaction.” – Motherboard