Another illegal club-drug turns out to have some genuine clinical use:
Ketamine, which can also cause feelings of detachment, could pave the way for new treatments for people suffering from depression, the researchers added.
Their study, published in the Archives of General Psychiatry, found ketamine restores to normal the orbifrontal cortex, an area of the brain located above the eyes that is overactive in depressed people.
The area is believed to be responsible for feelings of guilt, dread, apprehension and physical reactions such as a racing heart, said Bill Deakin, who led the study.
"The study results have given us a completely novel way of treating depression and a new avenue of understanding depression," said Deakin, a neuroscientist at the University of Manchester.
Chemistry is chemisty, whatever our laws and pleasure-phobias say.