Psychedelics, the drugs of choice for many in the 1960s counterculture movement, may be making a comeback. Scientists, doctors and scholars who have researched the health potential of drugs such as LSD, magic mushrooms and ecstasy, gathered at the Horizons conference ... to discuss innovations in the field. Psychedelics ... went out of favor with the law in the 1960s and 1970s, [which] slammed the lid on research. Those prohibitions seem to be loosening somewhat, with some governments allowing a small amount of research with psychedelic drugs, results of which show they may carry promise for treating a wide variety of ailments, from anxiety to addiction. "Some of the most significant civilizations have given an honored place to psychedelics," scholar and writer Graham Hancock told conference attendees. Hancock said hallucinogenic mushrooms played a part in cultures such as the Mayan Civilization and were depicted in European and African cave paintings as far back as 9,000 years ago. A recently completed project at New York University found that psilocybin appears to reduce anxiety and depression in terminal cancer patients. It appeared that psilocybin led many of the study participants, who were all in various stages of life-threatening cancer, to have "mystical experiences" that gave them great insights, improved their anxiety and generally made them more positive and loving, they and their loved ones reported. To date there have been no adverse reactions to psilocybin in any study.