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Psilocybin decreases depression and anxiety in cancer patients (2016)

Youden

This is from 2016, a lot has happened since then:

- The FDA recognized psilocybin as a breakthrough therapy for treatment-resistant depression: https://www.prnewswire.com/news-releases/compass-pathways-re...

- Some more studies, such as https://pubmed.ncbi.nlm.nih.gov/27909164/

- More widespread use in medical treatment, such as approval in Australia (https://www.bbc.com/news/world-australia-66072427) and limited approval in Switzerland

Very much anecdotal but I can say that psychedelics helped me and several friends a lot with depression. They don't just magically make you feel better - at least not long-term - but they give you the neuroplasticity you need to adjust your internal filters and behaviour. As such, if the purpose is truly healing and recovery, they're best paired with professional therapy, preferably from somebody who's experienced with psychedelic-assisted therapy specifically.

tuesdaynight

I don't have depression, but the first time I used psychedelics was so emotional helpful that I strongly suggested for depressed friends. I corrected that mistake hours later, after realizing that the risks are low, but life changing if it happens. However, I will never forget that feeling. I've used it again in the following years, but the results faded and it became boring for me.

rjxc

What are the low-but-life-changing risks?

causality0

Some people report personality changes, some as radical as "I found I didn't love my husband anymore."

FollowingTheDao

Many people say the first time they use Prozac that it was so helpful they recommended to their friends but then after a while it wore off.

How do you think psychedelics work? They activate the serotonin 2a receptor. It’s nothing but a different drug that effects serotonin. Except it does it more intensely but like all these drugs that act on receptors they wear off because of something what’s called receptor density changes.

For 70 years, we’ve been trying to manipulate receptors into making people feel good. It’s a losing proposition and it’s time to. We changed our thinking. For instance, if these people do have serotonin deficiencies, which is still possibly the case, what is it? That’s causing these deficiencies? Is it low, zinc, low B6, genetics, infection? There’s so many other things that we know that this could be, but we don’t try it.

milchek

Anecdotal, but about a year ago my wife participated in a psilocybin trial at a university here who were looking at patients with severe anxiety. It was her last hope after trying therapy, various supplements, as well as dietary and lifestyle changes, etc

It has been life changing for her, but one thing she tells people now is that what also helped was that it was facilitated with a trained therapist there during the session for guidance to make sure she didn’t “get stuck in a loop.” There was also many sessions pre dosing day to optimize the result.

She would highly recommend the treatment and hopes it becomes mainstream soon.

sampl3username

The point of music during a psychedelic experience is to provide a reference for the passing of time and to help with progression of thoughts. Music guides you through your thoughts, avoiding loops, by providing a changing texture, melody, rythm, and story.

This is on top of the other effects of music, such as emotional effects.

Levitating

> "get stuck in a loop"

I feel that. Thought loops are scary and it takes someone to recognize them to get you out.

AndrewThrowaway

Was she in placebo group?

yesseri

Is it possible to have a placebo group when doing a study on psilocybin? Would participants in the placebo not notice the lack of psychedelic effects?

EDIT: In the original link it says the placebo group received a much lower dose, so that seems to be one way of doing it.

AndrewThrowaway

Then again what if showing some funky hallucinogenic images/movies would have the same effect on some people? We surely know that people can go crazy (so have psychological effects) in cults and similar settings. What if intense visual/sonic/etc stimulation, visual distortions etc. together with messaging like "it will change your life and cure your anxieties" is the key in this therapy?

OldfieldFund

One way is using niacin in high doses, also known as vitamin B3, as an active placebo to induce a sensation of heat and cause the skin to flush red, which is a typical reaction to tryptamines.

The rest is a regular placebo. It can be a really strong thing when you are feeling hot.

mock-possum

sounds like in that case you’re not testing the efficacy of high versus sober, you’re testing heroic dosing versus micro dosing.

phyzix5761

Anecdotal, but I know someone who suffered major depression and was hospitalized multiple times. Their medication wasn't working and neither was therapy.

They discovered mindfulness meditation and in combination with becoming a more moral person, limiting music, eliminating social media and unwholesome entertainment, and practicing small acts of charity multiple times per week they were able to overcome their depression. It's been almost 15 years since they've had any symptoms.

seneca

That makes a lot of sense. May I ask, why "limiting music"? Was it just a specific type of music, or did music in general have a negative effect?

mezzie2

Music I like is a huge dissociative trigger for me. I definitely am 'better' the less I listen to it. Luckily, I'm not usually that fond of music of the type that plays in public areas.

phyzix5761

The way they've explained it is that we listen to music because we have a desire for sensual pleasure. And constantly giving in to desires, in general, creates a dependence where we're never satisfied with what we have. This dissatisfaction, when it becomes strong enough, leads to depression.

They practiced something called guarding their senses where they limited the amount of sensual pleasures they exposed themselves to and this calmed down their mind down to the point where even small things like the taste of ordinary food or having a conversation with a friend felt really satisfying.

vonneumannstan

"Just be a better person" is not real treatment advice lol.

phyzix5761

The way they've explained it is that immorality is usually based on desire and aversion. And constantly giving in to these things creates a dependence where we're never satisfied with what we have. Having a structured moral code that allows for observing these mental qualities without giving in to them eventually leads to their reduction because we're breaking the habit pattern. Once your desires and aversions are reduced then you become more satisfied with what you have; ie eliminating depression in their case.

draw_down

[dead]

mehphp

Anecdotally, I didn’t get severe anxiety and panic attacks until immediately after trying mushrooms. I didn’t even have a bad trip, but the next day something was off and I never truly recovered from that.

kbos87

Yes, the one time I've tried mushrooms it was a very unpleasant experience. For weeks I was left feeling like I had done some permanent damage to my mental health. I eventually got past that feeling and there might be a point I try them again, but not without professional guidance. Psilocybin is powerful and not a remotely recreational thing (for me at least.)

n4r9

Similar. Was over a decade ago. Not easy, but gradually gets better. Sorry to hear about it, it's not something I'd wish on anyone.

selectodude

I have way too much mental illness in my family to ever consider trying psychedelics.

landl0rd

Ditto. They contributed to long-term trashing the psyche of a relative and we have a really strong history of such issues, stuff like schizophrenia that they can trigger. It’s an under appreciated risk.

Joel_Mckay

In general, even with genetically inherited disorders your chances of developing most conditions drop from 54% to less than 18% in low stress environments.

Epigenetics are weird, but if you are past 35 without symptoms than you should be fine without medication (know several people that weren't as lucky.)

Stay healthy friend =3

landl0rd

“18% chance you go from depressed to schizophrenic” (in reality this risk is going to vary across a distribution of risk) is still not favorable odds the way I see it.

krzat

Psychodelics allow brain to change, but the change is not guaranteed to be positive.

Trasmatta

Exactly. This is why I hate it when psychonauts push the "there are no bad trips" angle. It's a lie, and psychedelics can have a long lasting negative impact on the brain in some cases.

spiralcoaster

I had this exact same experience. It felt like it opened the door to panic attacks, and I had a few of them in the years that followed.

tux3

The study design does try to mitigate blinding issues and expectancy effects, but with half of the participants reporting past use of hallucinogens, this is not going to be very effective blinding.

A majority of your low dose 1st group likely very much realizes that they're on the inactive dose.

alphazard

There's an argument to be made that traditional blinding and placebo techniques are not really relevant for interventions targeting mood or personality. e.g. anything that makes you feel better is an effective mood intervention, by definition. "blinding" in these studies is really just going through the motions to make certain authorities happy.

I would be more interested in polling the close friends and family of study participants and asking them about perceived changes. Instruct participants not to tell anyone about their experience in the study (whether they think they got a drug or how much).

It looks like the study tried to do something like this with "session monitors" who interviewed the participants the day after. They call it double-blind, but it's more like single-blind because the 3rd person assessment is the outcome measure.

sorcerer-mar

The issue with relying on placebo effects is not that they aren't real/don't work (everything you said also applies to e.g. a painkiller), but that they are very context-sensitive. Deploy that drug to an individual or population with a different belief framework or contextual information about the therapy or their condition, and you won't get the desired results.

The design you mention is really interesting! Have you seen this done anywhere?

demiters

Is it even possible to solve the issue of there being no convincing placebo? Would a different hallucinogen like 4-HO-MET work, where the visual experience component is similar, but the visceral effect on consciousness and thought patterns is less pronounced, almost sober like?

hattmall

Or they could give them a different psychedelic to test the efficacy of psilocybin specifically would be my thought.

voidUpdate

"Well everything looks exactly the same to me, and the guy over there is staring at the carpet and whispering about The Fractals, so I think I'm in the control group"

josh-sematic

Of course things get really complicated when this guy is messing with your control group https://xkcd.com/790/

bedane

I think this says more about the usual psy drugs we're prescribed and use.

they don't do jack shit.

voidUpdate

Mine have definitely helped me, as if I miss them for a day I get noticeably worse

Bluestein

The very apparent effect these things have makes you wonder if they do not (somehow) correct for what otherwise could be a built-in deficiency we carry with us, by "design" correcting some sort of built-in imbalance ...

jenkstom

Sorry, but I'd be dead without mine. I'm going to have to disagree with you.

hattmall

The interesting thing with mushrooms is that you could eat a handful, realize you are already dead, and then maybe not need the other meds at all.

null

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baerrie

Taking psychedelics allowed me to shed years of guilt and my own historic personality to become a more open and grateful person. I think some people have psychologies built on strong foundations that if shaken by psychedelics, cause more harm than good. The people who psychedelics help are those with more suggestible psyches that want change.

neom

FWIW: Got me sober and I think: kept me sober. Psilocybin is some powerful stuff tho, do recommend if people want to try it for "issues" - you seek someone who knows what they are doing first.

Aurornis

Anecdotally, I know several people who have tried mushrooms and/or ayahuasca for depression in recent years and their results are nothing like the glowing Internet reports.

The worst case is a friend who became disconnected from reality for a very long time. Went from atheistic to believing in mystical ideas. He thought he was able to see and sense things that we could not, like auras and secret messages. He was getting better last time we checked but he’s hard to get in contact with now. No prior hints of psychosis or family history, just a psychedelic induced mental illness.

The other anecdotes were not as dramatic, but also not as positive or free of side effects as studies like this one would make you think. Multiple stories of extended periods of derealization or anxiety attacks that started after the trip. There are similar comments here throughout this comment section.

There was a time when sharing these negative stories was met with disbelief and downvotes. I think as it’s becoming more common people are realizing that the interaction between psychedelics and depression isn’t as great as it seemed for a few years when they were virtually being promoted by podcasters and social media influencers as a novel cure for depression.

chuckadams

I think a lot of the negative reception to negative anecdotes were because they were often in the context of legalization. "I know someone who went crazy after trying $foo so we should still lock people into iron cages just for the crime of possessing it." Debate tends to get polarized when doors are being kicked down. Academic studies that are disconnected from culture wars don't tend to provoke such responses, probably because they don't tend to reach the general public in the first place.

Aurornis

> because they were often in the context of legalization. "I know someone who went crazy after trying $foo so we should still lock people into iron cages just for the crime of possessing it."

I think that’s what people thought when reading negative anecdotes, but I definitely didn’t see a lot of suggestions that we lock people up.

The same thing happened for marijuana: Any mention of negative effects would bring downvotes, scorn, and disbelief pre-legalization. Then once it was legal it became acceptable to say that marijuana wasn’t a panacea and using a lot of it was actually a problem.

Before this change, it was common to read highly upvoted anecdotes here and on Reddit claiming everything from medicinal properties to fixing depression to improving driving skills (an actual claim I saw here and on Reddit multiple times). Now it’s widely acceptable that frequent marijuana use is not good for mental health and wellbeing, but that was once a thing you could not say on the internet.

landl0rd

Which is a terrible strategy actually. People did the same with marijuana. “Dude it’s medicine lol. Dude it can’t possibly contribute to schizophrenia. Dude weed lmao.”

All this does is create a credible argument that the pro legalization crowd are objectively lying to people and therefore untrustworthy.

Levitz

I'm sure it's nothing like a panacea, but I've lost count of the times in which getting some context behind a report of a bad experience shows recklessness or just plain old bad decisions.

It also works the other way around, people even talk about how years of therapy didn't help but psilocybin did, and few seem to consider that maybe it was a combination of both? Perhaps all of that therapy that "didn't help" set the stage for something else.

General problem with anecdata I guess.

hattmall

Psychedelics are basically like shock therapy.

The whole ketamine thing though is even crazier at least with psychedelics there is a forced introspection and very little addictive nature.

jtrn

Welcome to year 30 of trying to prove psilocybin works for psychiatric illness. And still in the pilot stage.

Even taking the data at face value, the trial cannot disentangle the drug effect from expectancy, psychotherapy, and statistical noise. The enormous effect sizes are almost certainly inflated, multiple-comparison error is uncontrolled, and the participant pool is highly self-selected. Until a preregistered, parallel-group, active-placebo, adequately powered study with blinded independent raters replicates these findings, their practical value for routine cancer care remains minimal.

It’s so interesting to see how strong the drive to prove something works is, overriding everything. As a clinical psychologist, I would welcome this kind of therapy if it worked. But this is just sad. It’s just like listening to people claim that ivermectin can cure everything.

Show me one place where this therapy is conducted by people who haven’t "drunk the Kool-Aid," and I’ll be impressed. It’s so frustrating to work with actual patients and see how much these therapies really don’t work in reality. These kinds of biased studies pop up all the time without actually panning out. I’m starting to think that people promoting therapy, giving false hope, and spending money on research like this should be viewed as corrupt and evil.

throwaway330935

>Welcome to year 30 of trying to prove psilocybin works for psychiatric illness.

That is true, but it misses some important nuance: the war on drugs has effectively eliminated the ability for legitimate researchers to do significant research on these criminalized drugs.

For example, for me personally, a mild dose of marijuana is as effective as Zolpidem (Ambien) as a sleep aid, but without the lethargy and mental fog the next morning.

landl0rd

Most people involved in it are aware at some level that this is at best suspect and at worst a deception designed to push legalization. Same as the “health benefits of marijuana” crowd who violently deny the risks, addictive nature, potential to induce schizophrenia (temporary or permanent), tendency to make people lazy and obese, etc.

Legalization has never been a question of “is this good for people?”

jtrn

Plot twist, I'm for full legalization.

pas

FDA approved in 2018 for (treatment-resistant) depression?

https://www.prnewswire.com/news-releases/compass-pathways-re...

?

Aurornis

That’s not what that means.

Breakthrough Therapy designation means they can continue to study it with support.

It does not mean it’s approved for depression.

motoboi

To better appreciate his point, read “The Control Group Is Out Of Control”: https://slatestarcodex.com/2014/04/28/the-control-group-is-o...

johndhi

Why do you say the effect sizes are inflated?

jtrn

Due to a small, self-selected sample, biased toward educated, prior hallucinogen users, inadequate blinding, p-hacking via uncorrected multiple tests on 17+ outcomes, and crossover design flaws that confound long-term effects with intensive therapy.

Similar psychedelic therapy claims—for LSD/psilocybin alleviating cancer-related anxiety/depression—have echoed since the 1950s-1970s, yet they've never panned out into practical, scalable clinical therapies. This alone should raise a MASSIVE Bayesian statistics red flag, due to prior discount: with decades of unfulfilled hype. At this point new evidence requires extraordinary proof to update our view.

If such massive effectiveness were true, it would blow what we already have out of the water, and I would be the first to promote it to my patients. But you know what they say when something sounds too good to be true.

cmrdporcupine

Thank you for this. I am neither an advocate nor against psychedelic use in therapy but as a person who has consumed these things in the past, my own experiences make me entirely skeptical of people who put on an advocacy hat around any particular chemical. Especially psychedelics like psilocybin which are extremely unpredictable.

When I was a teen a friend gave me an analogy that stuck with me. In much older computers (e.g. C64, Vic-20, etc), they'd behave "interestingly" when you mucked around with the physical circuit board or there was a fault. E.g. if something short circuited because a screw was loose in the board, or a cartridge was halfway in or a chip partially desocketed, etc. Characters would appear in random places, or the machine go through odd loops and so on. And to someone who didn't know how the machine worked, there could be a certain "magic" and a "pattern" to this. But clearly you'd be missing the point if you thought you had "enhanced" the machine this way.

LSD and psilocybin are kind of like that, but for your brain. They short circuit and alter pathways. In ways that can be entertaining but you're entirely missing the point if you try to assign a higher meaning to them.

Our brains are expert pattern-finding machines, and produce causes and reasons even when there are none. For some there may be value in the experience of altering the operation of your brain to get yourself out of a stuck pattern, I guess. But I am not sure the very random stochastic nature of the whole thing is ... medicinal.

thisismyswamp

To be fair, so did a lobotomy. I believe close attention should be paid to any unintended outcomes of a therapy that the patient themselves would no longer be able to identify due to the nature of the treatment itself.

sebmellen

Psilocybin is about the 180-degree opposite of a lobotomy, just from a purely mechanical perspective. And it certainly feels that way qualitatively as well.

thisismyswamp

organic systems seek points of equilibrium, with veering too much off in any axis being detrimental

itomato

A patient doesn’t metabolize a lobotomy.

thisismyswamp

they don't have to as there's no ingestion of the therapeutic agent

hellohello911

Figure 3 is suspicious. Even the placebo arm has much better scores for depression and anxiety from baseline?

Aurornis

This happens in every depression study: Placebo effect is extremely strong for depression.

You can even collect depressed people, do nothing at all, and when you survey them 6 months later the average scores will improve. This is because depression is, on average, an aberrant condition and the average patient will tend to revert toward the mean.

However, psychedelic studies have a bigger problem: Psychedelics trigger false feelings of amazement and wonder, feeling like something magical has happened. This is like turbo placebo when you tell people that it’s a depression treatment. Maybe that’s a valuable therapeutic effect, or maybe not. There’s a lot to explore, but from all the studies I’ve read I’m not as bullish on mushrooms for depression as the headlines would indicate.

FollowingTheDao

Thanks for this. Great insights.

Depression is a symptom, and for symptoms there are many causes.

Personalized medicine will fix this but that costs money and time and caring.

hellohello911

Setting aside the psychedlic aspect, do you think figure 3 supports the study's conclusion?

Aurornis

If this is your first time reading depression studies then it’s going to be surprising to see both groups improve. This is normal and expected.

The key indicator of efficacy is the difference between groups. In this case there is some difference between groups but it is small.

ketamine

Not defending that - some times just knowing you are trying to better yourself helps make things seem better.

hellohello911

Sure - but I don't see the authors mention group convergence anywhere.

While the first 5 week post treatment actually looks impressive, I don't think the treatment arms being essentially the same after 6 months supports the conclusions of the study. Unless we backpedal and say the inactive grouo was microdosing (which has its own baggage...)

AndrewThrowaway

As far as I know antidepressants and even pain killers are the most susceptible to placebo effect.

hellohello911

Agreed. If I saw an SSRI with those curves I would doubt the efficacy of it. But this might be why I am not in charge of clinical trials. Just a layman taking pot shots.

yewenjie

The study mentions they administered 30 milligrams of psilocybin for 70 kg of body weight. Does anybody know how many grams of dried mushrooms that is equivalent to, roughly?

awithrow

A good ballpark for dried shrooms is roughly 1% psilocybin by weight of dried shroom, so about 3g. That said, it's going to vary a lot shroom to shroom, genetic to genetics, and species to species. Could be as high as 6g for more mild strains and as low a 1g for something like pan cyans.

Joel_Mckay

That is the problem with clandestine pharmacy by Florida man, as people may get the wrong dose or a mixture of various other poisons like arsenic (see dark web article.)

When ready, please talk with your doctor first. =3

adamgordonbell

2 to 5 grams dried psilocybe cubensis, per chatgpt.

TrackerFF

You’ll be tripping balls on that amount. 5g is close to a heroic dose.

EDIT: Never mind, didn't see that it was cubensis - which might take more due to being weaker than regular wild semilanceata.

throwaway330935

I've been doing some recent research and testing, and here's what I have found: I'm talking about the "Penis Envy" strain, which is quoted as being ~30% more potent than typical. 2g is the edge of where I start getting visual artifacting, and only sometimes. 3g, which I have not tried, was quoted as being towards the upper end of a "theraputic dose", and 6g as the upper end of a recreational dose. Some friends with much more experience consider 1g to be microdosing, FWIW. 0.25g I can't feel at all. .5g I start to feel some euphoria and 1g to 1.5g I start to feel "high" but with no noticeable psychedelics or just minor visual artifacting when I'm reading.

I don't really have anxiety or depression. I do have a fairly high stress family life, wife and kiddos have lots of issues. A few weeks ago I had 2g on an empty stomach on a Sunday and I just listened to music for ~4 hours and it was like I had a vacation. I hadn't enjoyed listening to music so much for 20-30 years. Also, I seem to feel kind of sleepy when I'm trippy, but afterwards I'm wide awake for 4-5 hours. So evening dosing is best avoided.

It's kind of great, for me personally, living in a state where it has been decriminalized.

locallost

I don't know if that's true or false, but I would certainly not trust chatgpt blindly in this case.

mock-possum

And I’d consider about an eighth to be a dose, so that sounds like it’s in the right neighborhood.

throwaway330935

I learned from an episode of "The Studio" that by "an eighth" you are likely referring to an eighth of an ounce is around 3.5 grams. Dude thought he got really mild shroom laced chocolates ("an eighth of a gram") and much hilarity ensued.

scellus

Here's a rough breakdown from Claude:

"[...] psilocybin converts to psilocin in the body at roughly a 1:1 ratio by active effect [...]

Psilocybe cubensis (most common): Contains about 0.5-1.0% psilocybin by dry weight. Since psilocybin converts to psilocin in the body at roughly a 1:1 ratio by active effect, 30mg of psilocin would be equivalent to roughly 3-6 grams of dried P. cubensis.

Psilocybe semilanceata (liberty caps): Much more potent at 1-2% psilocybin content, so you'd need only about 1.5-3 grams dried.

Psilocybe azurescens: Even more potent at 1.5-2.5% psilocybin, requiring roughly 1-2 grams dried.

Important caveats:

- Individual mushrooms within the same species can vary by 3-5x in potency Growing conditions, harvesting time, and drying/storage methods all affect potency

- The caps are typically more potent than stems

- Fresh vs. dried makes a huge difference (fresh mushrooms are ~90% water)"

Have to note that the paper is from 2016; for those really interested, it's good to read recent review papers.

sampl3username

@grok is this true????