<p> <br /><b>IMAX DOCUMENTARY: THE HISTORY OF LSD PART 4 OF 4</b> <br /><br />As a recreational drug, <b>LSD</b> has remained popular among certain segments of society. Traditionally, it has been popular with high school and college students and other young adults. LSD also has been integral to the lifestyle of many individuals who follow certain rock music bands, most notably the Grateful Dead. Older individuals, introduced to the hallucinogen in the 1960s, also still use LSD. <br /><br />LSD made a comeback in the 1990s, especially through the acid house scene and raver subculture. However, the current average dosage unit is approximately 30 to 75 micrograms, a significant decrease from the 1960 average dosage unit of 200 to 300 micrograms. Lower doses may account for the relatively few LSD-related psychiatric emergencies during this period. LSD use and availability declined sharply following a raid of a large scale LSD lab in 2000 (see LSD in the United States). <br /><br />Although retail-level distribution of LSD is known to sometimes take place at public events that feature music that appeals to users, such as certain kinds of concerts and all-night raves, users at the fringes of the distribution chain typically obtain small quantities of LSD from friends and acquaintances in relatively private exchanges. <br /></p><p></p>
