The U.S. Food and Drug Administration has released its Draft Guidance for the research of psychedelic drugs including substances such as psilocybin, LSD, and MDMA.

(CNN) Shrooms, Alice, tweezes, mushies, hongos, pizza toppings, magic mushrooms -- everyday lingo for psychedelic mushrooms seems to grow with each generation.

A 2016 public poll on psychedelics suggested they aren’t as favorable, it’s possible that attitudes will shift as the research findings on their therapeutic potential enter the mainstream.

In clinical research settings, renewed investigations on the use of psychedelic substances for treating illnesses such as addiction, depression, anxiety and posttraumatic stress disorder (PTSD).

Jonathan Lubecky, a Marine Corps and Army veteran, returned from a deployment to Iraq with severe PTSD. His participation in a study of MDMA, the drug commonly known as ecstasy, proved life-saving. (Travis Dove/For The Washington Post)