LSD, ecstasy (MDMA) and other psychedelics are powerful, mind-altering drugs that, as described by former Washington Post Magazine editor Tom Shroder, intrinsically [challenge] the rationalist, materialist underpinnings of Western culture." For most of a century, our society has struggled to come to grips with these "profoundly threatening drugs," largely without success. They've all been made illegal. For decades, the Food and Drug Administration and the Drug Enforcement Administration have strictly banned scientific investigations into their potential benefits - which is unfortunate, since these psychoactive drugs also seem able to do incredible good, particularly in the treatment of post-traumatic stress disorder (PTSD). Every year, as many as 5 million Americans suffer from its effects. Frequent consequences include depression, drug and alcohol abuse, and a host of associated health problems. In "both humanitarian and economic terms," the costs are staggering. And PTSD stubbornly resists treatment. Psychoactive drugs such as LSD and MDMA seem to bring powerful healing energies to bear on the underlying issues. But despite a growing mountain of evidence supporting the therapeutic benefits delivered by these drugs, government authorities have blocked scientific and therapeutic explorations of their potential. Fortunately, the government's prohibitions may be loosening, thanks to a cadre of psychedelic advocates who have steadfastly refused to surrender to the taboos. The story of those people and their efforts to win scientific and therapeutic approval for psychedelic drugs is the central thrust of Shroder's strangely wonderful new book, Acid Test: LSD, Ecstasy, and the Power to Heal.