Buzz
Lysergic acid diethylamide (LSD) has made quite an impression in its brief existence—seen as transformative by some, and controversial by others. Its reputation is a combination of intrigue and notoriety.
From laboratory trials to its use as a recreational drug, LSD has seen many applications. It has been tested as a potential treatment for mental health and even explored as a tool in warfare. Yet, the full scope of what this fascinating substance can do remains unclear.
In his final moments, Aldous Huxley, famed author of *Brave New World*, requested that his wife administer a syringe of LSD so that he could experience the most extraordinary trip of his life. She gave him a 100-microgram dose, repeating it an hour later. This might have been the highest dose of LSD ever recorded.
What exactly was it like for him? How does LSD affect our perception and experience? What does science reveal about the way LSD alters the brain? For those curious about such questions, here are 10 effects of LSD on the human brain.
10. Awakening
Though the full impact of LSD on the brain remains a mystery, scientists have uncovered quite a bit about this elusive substance. The question remains: 'What exactly happens to your brain when you ingest LSD?'
For those who have experienced LSD, it’s no surprise that the drug stimulates areas of the brain that are typically dormant. In fact, it's truly remarkable how these inactive brain regions become active and light up like a candle on fMRI scans when someone under the influence of LSD is examined.
On a neurological level, the experience of LSD is like a grand orchestration of neurons firing. Research indicates that LSD brings to life even the most dormant areas of the brain, awakening parts that are usually in a deep, hibernating slumber.
9. Full Power
One surprising revelation is that the activation of typically dormant brain regions is far from minor or insignificant. As illustrated in the image above, nearly the entire brain is engaged, utilizing all of its neurons and potential simultaneously.
Scans have unquestionably demonstrated that LSD impacts the whole brain at once, turning an ordinary experience into a cacophony. So, what parts of the brain does LSD actually influence? All of them!
8. Regulation
LSD significantly influences the neurotransmitter serotonin, a chemical also affected by other substances like MDMA (commonly known as Ecstasy). While MDMA affects multiple neurotransmitters like LSD, its most notable and intense effect is the powerful feeling of euphoria, which comes from the massive serotonin release in the brain.
Serotonin, as a key regulatory neurotransmitter, plays a vital role in maintaining your body's internal balance, ensuring that you feel 'normal' and stable. It helps regulate various functions like mood, temperature, hunger, and sleep. This is why drugs that interfere with serotonin levels can cause serious issues, as too much serotonin can overwhelm the body, preventing it from managing these crucial functions.
7. Hallucination
When serotonin levels in the body are disrupted and the brain's regulatory systems are thrown off balance, the individual may begin to perceive things in a distorted way while under the influence of LSD, which is commonly referred to as experiencing hallucinations. The United States government provides insight on LSD-induced hallucinations, noting:
Consuming hallucinogenic substances can cause users to perceive images, hear sounds, and experience sensations that feel real but are not actually present. These effects typically set in within 20 to 90 minutes after ingestion and can persist for as long as 12 hours. The effects are often unpredictable and can vary depending on the dosage, the user's personality, emotional state, expectations, and environment.
The effects of substances like LSD are often characterized as drug-induced psychosis, leading to a disconnection from reality, impaired rational thinking, and difficulty communicating. Users often describe LSD and similar experiences as 'trips,' with particularly unpleasant episodes referred to as 'bad trips.'
Some trips bring enjoyable sensations that are mentally stimulating, leading to a heightened sense of clarity and understanding. In contrast, bad trips are marked by terrifying thoughts and intense feelings of anxiety and despair, including fears of losing control, insanity, or even death.
For some, the experience of LSD may sound deeply unsettling, something to be avoided at all costs. However, others are willing to pay a significant amount for the experience. The user's mental state and mood prior to embarking on the psychedelic journey play a crucial role in determining the outcome of the trip. Ultimately, the nature of the trip seems to depend on the perspective of the individual.
LSD's primary impact is on serotonin receptors, especially the 5-Ht2A receptor, but how it causes hallucinations remains somewhat mysterious. Some suggest the drug causes these receptors to activate erratically, producing a kind of mental 'static' or 'noise,' disrupting the brain's normal, calm state and leading to altered consciousness.
6. Is LSD Truly Harmless?
While it's not accurate to claim LSD is completely harmless, it’s generally considered much safer than substances like alcohol or opiates, according to sources like DrugAbuse.com. Additionally, overdose incidents are quite rare.
Have you ever encountered someone who had an LSD overdose? It's highly unlikely.
Recent studies (echoing older findings) suggest that LSD could have potential in treating alcoholism. Bill Wilson, a co-founder of AA, reportedly tried LSD to combat his alcohol addiction with some success, though the effects were temporary, and he eventually relapsed.
5. Dedication
Taking LSD demands a real commitment to the altered mental states it induces. Most research and anecdotal evidence indicate that an LSD trip typically lasts between 8 to 12 hours, with the average being around 12 hours. That’s essentially half a day for a single dose, so users must be ready for an extended period of altered perception and mental unrestrainedness.
According to VeryWellMind.com, the effects of LSD on both body and mind can last at least 12 hours after consumption. Since LSD is often produced and sold illegally, the purity and dosage can vary, affecting both the intensity of the experience and its duration in the system.
4. The Dissolution of Self
A common experience among LSD users is the sensation of losing the 'self,' where the boundaries between one’s identity and the environment begin to blur. Users may feel a profound connection with others, nature, or even inanimate objects, leading to a sense of unity. This phenomenon could have a neurological basis.
In 2012, UK researchers conducted the first study in four decades that involved administering LSD to patients. Previously, it had been illegal. The study confirmed that LSD activates the brain, but it also revealed that the brain's 'default mode' (the region associated with consciousness) receives less blood flow while under the influence of LSD.
The default mode network is the part of the brain that remains most active when we are at rest. It consists mainly of the medial prefrontal cortex, the medial temporal lobe, and the posterior cingulate cortex. These areas control functions like daydreaming and imagination, which is why LSD disrupts normal visual processing, leading to hallucinations.
As the retrosplenial cortex and parahippocampus in the default mode network become less connected, LSD users experience greater 'ego loss.' These brain regions are responsible for the sense of self that we feel in our waking state. Moreover, LSD enables communication between brain networks that are usually separate, leading to intense interconnectedness.
3. A Spiritual Journey
In one of the earliest LSD studies, Harvard University researchers conducted an experiment in a chapel basement on Good Friday in 1962. They gave LSD to 10 divinity students to determine if it could trigger mystical or religious experiences. The study was deemed successful, as the participants indeed reported having profound religious experiences.
This marked the beginning of a major movement in the United States to explore LSD in academic settings. However, the government intervened, imposing a ban on LSD research involving human subjects.
Research has revealed that the left hemisphere of the brain is primarily responsible for our sense of self, while the right hemisphere is linked to a feeling of 'presence.' This was demonstrated with the God Helmet, a device equipped with electrodes that induces a sense of divine presence when worn by ordinary people.
This isn’t some fringe theory; it’s rooted in real neuroscience. Current studies suggest that LSD might activate similar brain regions or operate in a manner comparable to the God Helmet. Dr. Robin Carhart-Harris, who led the 2012 study on ego dissolution, has remarked:
Our findings suggest that this effect is key to the profound altered states of consciousness that individuals often report during an LSD trip. It’s also connected to what is sometimes called 'ego-dissolution,' where the usual sense of self is dismantled, replaced by a feeling of reconnection with oneself, others, and the natural world. This experience is often interpreted as religious or spiritual, and it appears to be linked to improvements in well-being after the effects of the drug have worn off.
Future research may eventually connect the experiences induced by the God Helmet with those reported by LSD users. It’s hypothesized that LSD stimulates the right hemisphere while calming the left hemisphere, leading to the loss of self and ego, and giving rise to the religious-like experience many users report.
Brain scans indicate that LSD primarily affects the temporal lobe, which plays a critical role in memory. This part of the brain is intensely stimulated during the sensory alterations induced by the God Helmet. The brain remains an enigmatic organ, offering vast potential for discovery. In the future, society might realize that many currently illicit substances could unlock deeper insights into the workings of the human mind, our final frontier.
2. Rehabilitation
Despite being a novel and cutting-edge field, there is some evidence suggesting that LSD can assist in the treatment of various mental health issues, including anxiety, depression, post-traumatic stress disorder, and bipolar depression. However, these findings appear to be somewhat contradictory.
On one side, LSD pushes the brain into a brief, acute state of psychosis by altering its natural resting state. On the other, it seems to alleviate psychosis and other mental health conditions for months after its use, almost like a chemical form of electroshock therapy.
LSD holds significant promise in the treatment of depression. Medical professionals and researchers remain hopeful that it will assist those diagnosed with terminal cancer in combating the depression that often accompanies such a condition.
A study conducted by Cambridge found that LSD improved mood and enhanced optimism two weeks after use, without increasing delusional thoughts. This suggests that while psychotic symptoms may emerge soon after consumption, the lasting effects involve a more positive state of mind, likely due to the ‘loosening of cognition.’
LSD's prolonged influence on serotonin receptors makes it similar to many modern antidepressants, especially SSRIs that boost serotonin receptor activity. Enhancing the serotonin 2A receptor (5-HT2AR) could produce effects akin to those of drugs like Prozac. As more research is conducted, the exact effects will become clearer.
1. Psychosis
LSD induces a temporary state of psychosis in the brain, though it is usually mild and, for some, quite pleasurable. This is not surprising, as the default mode network is involved in various disorders such as Alzheimer’s, depression, post-traumatic stress disorder, autism, schizophrenia, and bipolar depression. Changes in this brain region are often linked to these conditions.
Since the prohibition of LSD research in the 1960s, widespread fears about permanent psychosis following an LSD trip have persisted. However, research in the 21st century has shown that these fears were completely unfounded.
