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|Highs and lows|
You cannot say that LSD fries your brain because we've shown that if anything it makes your brain work better.
|—Interview with neuropsychopharmacologist David Nutt (52-insights.com)|
LSD, lysergic acid diethylamide, or LSD-25, is a semi-synthetic psychedelic drug that is derived from ergot alkaloids, which occur naturally in some plant diseases that infect rye, Achnatherum robustum ("sleepy grass") and other grains. The substance can bring about changes in the human nervous system in such small quantities that it was not, at first, believed possible (threshold dose is 50 micrograms).
LSD was used extensively in psychiatric research in the 1960s, but society was afraid of anything that could blow Huxley's mind after Brave New World; so they enacted legal measures that made researching the beneficial effects of any hallucinogens extremely difficult. Medically, LSD has been shown to treat the pain symptoms of cluster headaches in low doses, and along with other psychedelic hallucinogens has shown some potential in treating alcoholism, nicotine addiction, and post-traumatic stress disorder in combination with standard psychotherapy (leading some to suspect that at least some 1960s users were self-medicating).
John Lilly experimented with giving LSD to dolphins to try to form computer terminal-assisted, linguistically-based inter-species communication. So far we haven't heard anything on how well it's worked.
Effects on performance
In theory LSD should be a performance-reducing drug; however, in 1970 All-Star Pittsburgh Pirates pitcher Dock Ellis managed to deliver a no-hitter against the San Diego Padres under the influence of acid. Steve Jobs also claimed that Microsoft would be, all-in-all, a more interesting software company if Bill Gates had ever done acid. However, in a 1994 interview with Playboy magazine, Gates implied he had.
Recent studies involving fMRI scans of the human brain on acid have shown that it not only doesn't reduce brain activity, but does quite the opposite — it creates a hyperconnected state of awareness in which axonal signalling is formed between cortices and lobes of the brain that otherwise never connect or interact with one another. The result is a human brain in which nearly all cortices are functioning at an extremely high rate of connectivity; in other words, if the intense world hypothesis is correct, this is in many ways artificially inducing an autistic state of mind.  This state of overstimulated awareness can lead to potential fear and anxiety, especially if the user has pre-existing mental conditions, because all learned inhibition basically comes to the forefront of the conscious mind when using LSD. This means that repressed thoughts and memories become intensely vivid and inescapable — which has potential therapeutic use for obvious reasons, especially in the treatment of PTSD, but in an uncontrolled environment can lead to serious cases of the heebie jeebies.
LSD has been indicated in the treatment of Parkinson's disease, and in fact, one of the modern-day prescription drugs given in hospitals to treat Parkinson's is modeled directly after LSD itself. It also happens to be several times more toxic than the original drug. Interestingly enough, a wide variety of drugs modeled from LSD, or pharmacologically very similar to LSD (in the sense that they target the same receptors and have the same action on the brain as LSD), have been used to treat a variety of physical illnesses, including brain tumors, dementia and stroke.
Or if you're a scientist like Francis Crick*, using LSD might lead to the discovery of something as revolutionary as DNA. (Side effects may include acquiring a taste for tinfoil haberdashery.) *Disclaimer: Francis Crick is an asshole who came up with his ideas based on stealing work of Rosalind Franklin, so he isn't exactly a great example. Or... if you're Kary Mullis, LSD might help you invent PCR and kickstart a new era of biology research. Side effects may include belief in ancient aliens, astrology, and government conspiracies pretending that HIV causes AIDS and that humans cause climate change.
VICE: This study shows that acid sticks in people's serotonin receptors, maybe for days at a time. Can it stay in there forever and make people "permafried"?
David Nichols: It's pretty much a myth, [but] there are certain people who have a predisposition to certain types of mental illness—schizophrenia is the most commonly known one—those people will eventually develop schizophrenia. It hits you in your late teens and early 20s. So any kind of stressful event will cause the onset of that disorder. It's a developmental disorder, in the development of the cortex. So a lot of kids, they go off to college, and in that first semester, you're diagnosed with schizophrenia. Students [normally] have to go home because it's the stress, but they were primed for [schizophrenia]. Well, people who are primed for it, if they take a lot of LSD, it can trigger the onset of actual psychosis.
VICE: Yeah, but what if I take a really, really big dose?
David Nichols: In most circles, if you're mentally healthy, and you're not predisposed to psychosis, then you'll survive those big doses. I've talked to people who have taken massive doses of LSD, and they'll say, "I was high for a week, but then I came back. I thought I was going crazy, but then I came back." People who are not predisposed to mental illness basically survive those types of things. The people who are casualties are people who had a predisposition in the beginning. Probably any dose would have pushed them over the edge. That's sort of the current thinking.
- George Carlin
- Bill Hicks
- John Lennon
- Richard P. Feynman
- New Left
- Other ways of knowing
- Kool-Aid drinker
- Hunter S. Thompson
- Chemical Salvation? — A history of LSD, à la Jack Chick
- LSD Makes Your Brain More Like a Thesaurus: Scientists found the drug actually elevates an innate language ability. — Huffington Post (1 September 2016)
- Arran Frood; Dropping acid may help headaches September 13th 2006, Nature
- No Hitter
- "I wish him the best, I really do. I just think he and Microsoft are a bit narrow. He'd be a broader guy if he had dropped acid once or gone off to an ashram when he was younger." Steve Lohr. "Creating Jobs." The New York Times Magazine, 1997-01-12.
- "My errant youth ended a long time ago. […] That was on the other side of that boundary. The young mind can deal with certain kinds of gooping around that I don't think at this age I could. I don't think you're as capable of handling lack of sleep or whatever challenges you throw at your body as you get older. However, I never missed a day of work." Playboy, 1994