Name: 你的大腦對Ayahuasca：致幻藥物。 (Your Brain On Ayahuasca: The Hallucinogenic Drug)
Uploaded: 2021-01-14T06:38:15.000Z
Duration: 3 min 35 s
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進階被動語態

The hallucination inducing drug ‘ayahuasca’ has been used for centuries by tribes in South

America during spiritual ceremonies. But as it becomes more mainstream for those seeking

optic and auditory hallucinations, what exactly is it, and how does it affect your body and

Ayahuasca is actually a combination of the leaves of one plant (Psychotria viridis) and

the vines of another (Banisteriopsis caapi) - neither of which have any hallucinogenic

power on their own. But the leaves do contain DMT (N,N-Dimethyltryptamine), which is structurally

similar to your neurotransmitter serotonin and to the chemical found in magic mushrooms!

The problem is, your gut enzymes normally deactivate DMT before it’s absorbed into

your bloodstream; and this is where the vines come in. They inhibit your gut enzymes from

working properly, and allow DMT to travel within your blood and eventually cross the

The effects of the drink usually hit around half an hour after consumption, with hallucinations

peaking after one hour, and subsiding within four to six hours. But these hallucinations

are reported to be different from drugs like LSD and shrooms in that most people are fully

aware that they are visually hallucinating. In addition, instead of ‘hearing voices’

the sounds heard are usually exacerbations of the noises already occurring around them.

And unlike those who consume LSD or shrooms from a ‘good trip’, many who drink ayahuasca

are seeking to reconcile with their thoughts and emotions, as well as past and present

traumatic events. Afterwards, most feel more at ease with their thoughts, and more accepting

The Default Mode Network, is a distinct area of the brain that if overactive is associated

with depression, anxiety and social phobia. And fMRI brain scans show that ayahuasca causes

a significant decrease in activity within the default mode network. This is usually

linked with a meditative state and explains why for those seeking optic and auditory hallucinations,some

ayahuasca drinkers feel at peace with themselves, and find a renewed sense of purpose after

Additionally, DMT has been linked with proteins that promote the maintenance of long-term

memory, neural plasticity and the regeneration of new neurons. It can bind to specific receptors

found on mitochondria and endoplasmic reticula, and may even have the potential to kill certain

cancerous cells. On top of this, alkaloids from the vine have been shown to induce apoptosis

in mice melanoma cells and certain liver cancer cells in humans. This is not to say that ayahuasca

is a replacement for radiation or chemotherapy, but it may hold future possibilities for cancer

research. Interestingly, unlike other drugs such as alcohol or cocaine, ayahuasca does

not seem to create a tolerance, so regular drinkers aren’t required to drink more in

order to achieve the same effect experienced the first time.

After consumption, drinkers usually suffer violent retching, vomiting, and even diarrhea,

as the brew is extremely acidic, making an upset stomach normal, even in experienced

drinkers. And there is a dark side of Ayahuasca too - fatalities have been linked to its ingestion,

particularly among tourists, though the manner of death is often undetermined. The increase

in popularity has also given rise to fake shamans, unqualified to create the brew safely.

Ultimately, the data is currently too sparse to seriously consider ayahuasca recreationally

and more clinical trials are required to conclude whether ayahuasca is safe.

Special thanks to audible for supporting this episode to give you a free 30 day trial at

audible.com/asap. This week we wanted to recommend the book “Hallucinations” by Oliver Sacks

which takes an in-depth look into the myriad of conditions that induce hallucinations,

and shows how common they actually are! You can get a free 30 day trial at audible.com/asap

and choose from a massive selection! We love them as they are great when you’re on the

And subscribe for more weekly science videos!