Participant characteristics and psychedelic use history
There were 163 participants after exclusions (see Supplementary Materials for details). As shown in Supplementary Table 1, the mean age of participants was 27.5 (SD=8.06) although the mode (20) and median (26) age were lower. There were considerably more male (n=120) than female (n=35) or non-binary (n=8) participants. When asked what psychedelic drugs they had previously taken, participants reported broad experience, with LSD and psilocybin being the most common. Participants estimated having used psychedelic drugs a mean of 28.41 times (SD=45.23). This mean was highly skewed due to a small number of considerably higher use estimates (300 uses n=2; 200 uses n=2; 150 uses n=2; 100 uses n=10). The mode (20) and median (11.5) use estimates were considerably lower.
Characteristics of first and most recent psychedelic experiences
Table 1 presents the characteristics of participants’ first and most recent psychedelic experiences. Given the wide variability in these estimates, we report the mean, mode and median time since these two experiences. This variability was largely driven by a small number of older participants who had been using psychedelic drugs for decades. Given that the mode age of participants was 20, it is perhaps unsurprising that the mode time since first use was two years.
Table 1. Characteristics of first and most recent psychedelic experiences
|
First experience (n=163)
|
Most recent experience (n=163)
|
How long ago in months (mean)
|
67.52 (78.33)
|
8.68 (20.76)
|
How long ago in months (mode)
|
24
|
1
|
How long ago in months (median)
|
42
|
2
|
|
|
|
Drug used (n)
|
|
|
LSD
|
76
|
54
|
Psilocybin
|
67
|
58
|
2C-B
|
6
|
9
|
DMT
|
3
|
10
|
Mescaline
|
1
|
2
|
Other (see Supplementary Materials)
|
10
|
30
|
|
|
|
Location (n)
|
|
|
At home *
|
67
|
93
|
At a trusted friend’s house
|
51
|
29
|
In nature
|
18
|
19
|
At a festival
|
11
|
6
|
At a club
|
8
|
8
|
In a ceremonial setting
|
0
|
4
|
Other
|
|
|
House party
|
3
|
0
|
Outdoor party (rave, solstice)
|
2
|
0
|
Not clear (e.g., name of city given)
|
2
|
4
|
At school
|
1
|
0
|
|
|
|
Intention (n) ^
|
|
|
Out of curiosity
|
118
|
32
|
For fun / recreationally
|
107
|
93
|
For spiritual pursuits
|
32
|
75
|
To find a sense of self-enlightenment
|
31
|
67
|
To explore the therapeutic properties
|
24
|
61
|
To process difficult emotions
|
15
|
52
|
For artistic inspiration
|
15
|
40
|
I did not have an intention / reasoning
|
6
|
1
|
Other (see Supplementary Materials)
|
4
|
10
|
* Where participants report being in two places (e.g. at home and then in nature), we have reported this as the first place mentioned. ‘At home’ also refers to temporary residences, such as hotels, holiday cottages and student dormitories.
^ Participants could select more than one intention.
LSD and psilocybin were the most commonly reported psychedelics used in both first and most recent experiences, although a wide range of psychedelics were used, with some participants reporting polydrug use (with other psychedelics or other non-psychedelic drugs).
The locations of use were relatively comparable, with most participants reporting using them at home (first n=67; most recent n=93), but with more participants reporting their first experience as being at a trusted friend’s house (first n=51; most recent n=29).
Participants’ intentions were different for the two psychedelic use experiences. The most common intentions for the first experience were curiosity and fun. While fun was still a commonly cited intention for the most recent experiences, other intentions such as spiritual, self-enlightenment, artistic, therapeutic and processing of emotions were more common for the most recent experience.
Harm reduction practices used during first and most recent psychedelic experiences
Figure 1 shows the percentage of participants who used each of the listed harm reduction practices for their first and most recent experiences. The line on the secondary axis shows the mean Harm Reduction Scores for each practice.
To examine the difference in Participant Harm Reduction Scores between experiences, we ran a repeated measures ANOVA of time (before, during, during-myths, after) and occasion (first, most recent). This revealed a main effect of occasion (F(1,162)=28.32, p<0.001, hp2= 0.012), indicating that, as hypothesised, Participant Harm Reduction Scores were higher for their most recent experience (F(3, 486)=563.82, p<0.001, hp2=0.78). We also observed an occasion ´ time interaction (F(3,162)=24.76, p<0.001, hp2=0.133), and Bonferroi corrected comparisons indicated that Participant Harm Reduction Scores were higher for the most recent psychedelic experience for the approaches used before (t=-9.63, p<0.001) and after (t=-3.28, p=0.03), but not those used during (t=-1.47, p=1) or during-myths (t=-0.04, p=1). The main effect of time is not meaningful given the items which comprise these scales are not comparable.
Experiences of first and most recent psychedelic experiences
Table 2 shows the mean scores (SD) for the Emotional Breakthrough Inventory (EBI) and each of the subscales of the Challenging Experiences Questionnaire (CEQ). The mean CEQ score of 17 for both first and most recent experience is in line with previous research (21). Exploratory analyses indicated that EBI and CEQ scores were positively correlated for both first (r=0.393, p<0.001) and most recent experiences (r=0.369, p<0.001). A repeated measures ANOVA with each of the seven CEQ sub-scales and the two occasions as the two factors demonstrated that there were no meaningful differences between subscale scores for first and most recent experiences. A paired samples t-test indicated that the EBI scores for the most recent experience were meaningfully higher than the first experience (t(162)=4.42, p<0.001, d=0.35).
Table 2. Harm Reduction Scores, EBI and CEQ for all participants and split by those who reported using the psychedelic in party as compared with other settings.
|
First experience
|
Most recent experience
|
|
All participants (n=163)
|
Party setting (n=24)
|
Other setting (n=139)
|
All participants (n=163)
|
Party setting (n=12)
|
Other setting (n=151)
|
Harm Reduction Score
|
40.06 (18.90)
|
21.95 (12.61)
|
43.20 (18.57)
|
48.68 (18.81)
|
26.23 (12.25)
|
50.46 (18.10)
|
Emotional Breakthrough Inventory (EBI)
|
27.77 (26.46)
|
20.38 (24.16)
|
29.05 (26.71)
|
39.18 (29.91)
|
41.56 (23.56)
|
39.00 (30.31)
|
Challenging Experiences Questionnaire (CEQ)
|
17.14 (18.06)
|
19.27 (18.02)
|
16.77 (18.10)
|
17.29 (17.06)
|
31.46 (24.02)
|
16.16 (15.96)
|
Isolation
|
19.14 (25.14)
|
29.44 (29.35)
|
17.36 (24.02)
|
18.24 (22.29)
|
33.89 (26.28)
|
16.99 (21.56)
|
Grief
|
15.52 (20.99)
|
17.36 (21.24)
|
15.20 (21.00)
|
19.12 (21.68)
|
28.33 (25.21)
|
18.39 (21.30)
|
Physical distress
|
20.69 (19.68)
|
21.33 (18.93)
|
20.58 (19.87)
|
20.54 (20.56)
|
39.67 (22.85)
|
19.02 (19.66)
|
Fear
|
19.07 (24.54)
|
20.83 (25.76)
|
18.76 (24.41)
|
16.59 (22.54)
|
29.67 (26.45)
|
15.50 (21.97)
|
Insanity
|
17.30 (26.81)
|
21.67 (32.26)
|
16.55 (25.81)
|
11.90 (21.85)
|
30.00 (27.63)
|
10.46 (20.76)
|
Paranoia
|
9.88 (18.46)
|
10.00 (17.94)
|
9.86 (18.61)
|
8.77 (18.18)
|
30.00 (30.15)
|
7.09 (15.86)
|
Death
|
12.45 (24.14)
|
8.75 (19.18)
|
13.09 (24.90)
|
15.15 (24.33)
|
23.33 (25.70)
|
14.50 (24.19)
|
Values represent mean (standard deviation).
As hypothesised, there was evidence that Participant Harm Reduction Scores were positively correlated with EBI score (both: r=0.24, p=0.002) and negatively correlated with the first CEQ score (r=-0.21, p=0.006), but less so with the most recent CEQ score (r=-0.15, p=0.061).
Given the importance of setting in the psychedelic experience, in unplanned exploratory analyses we compared experiences and harm reduction approaches between those who took the psychedelic at a party/club/festival (hereafter ‘party setting’ and those who took them in other settings (e.g., home, nature, trusted friends’ house, or other; hereafter ‘other setting’). The majority of participants did not take the psychedelic in party settings and this was even less common for the most recent experience (first n=24; most recent n=12). As there was a large difference in sample size and because these analyses were unplanned, we have not run statistical tests on the data, but instead we report descriptive statistics (see Table 2). As would be expected, Participant Harm Reduction Scores were lower when used in party settings. The CEQ score was higher for party settings (particularly for the most recent experience, although note the small sample size). For interest we have also split the CEQ into its seven subscales – it appears that higher CEQ scores for party settings for first use were characterised by feelings of isolation. For the most recent experience, scores for all subscales were numerically higher. EBI scores were lower in party settings for first experience, but not most recent.
Qualitative analysis of free-text responses
We have developed three broad themes which encapsulate participants’ responses to the free-text response box. These relate to 1) the profound positive experiences the psychedelics elicited 2) the importance of the drug and 3) the importance of set and setting. Below we provide an analysis of these themes, alongside illustrative quotations (for longer quotations we have provided participant sex, age and the number of times they report having used psychedelics). Where appropriate we bring in evidence from the quantitative analysis.
Theme 1. Profound positive experiences
Participants frequently described profound psychedelic experiences which had “changed [their] life”. These experiences helped them feel “centered and connected with everyone and everything”, “closer to nature”, better able to “understand the nature of [their] mind” and allowed them to “come to terms with anxiety, depression, and nicotine addiction” or deal with “severe mental illness” “without the bad side effects that come with prescription psychiatric medications”. Participants felt that psychedelics “could help others like [them] if used in a professional therapeutic setting” as it would “open so many people's eyes to the universe and unconditional love”. Psychedelics were described as “super important medicine”.
Participants felt that the survey was limited in its scope as it failed to ask about these positive experiences. While the harm reduction practices largely focused on ways to reduce harm and asked about ‘safe’ experiences, participants felt that it “missed some of the benefits, or things that might be done to enhance the experience” and how not all challenging experiences (i.e., the CEQ) were negative:
“not every hard trip is a ‘bad trip’. Sometimes you need to struggle to grow stronger” and that these “bad parts…make it worthwhile in the right amount” (male, 22, 5 uses).
Theme 2. Importance of the drug
Participants explained how the harm reduction practices they would use would vary depending on the psychedelic drug they were taking. While some commented on practices which, to our knowledge, are not based on scientific evidence (e.g., cannabis being “very negatively impactful on LSD” but “helpful when consuming psilocybin”, or fasting before 2C-B, but eating before LSD or psilocybin), others highlighted differences between psychedelics which make intuitive sense (e.g., testing being “super important” if using “pills/powder bought from an unknown source”, but less important for psilocybin in the form of mushrooms, particularly for those “one grew oneself”).
Indeed, testing the psychedelic before use (both to identify the substance and the dose) was a harm reduction practice which garnered considerable comments with participants reporting that if from a “trusted source”, testing was not important. The quantitative data suggests that while both practices received high Harm Reduction Scores, few participants tested their drugs, but many obtained their drugs from a reputable source, particularly for the most recent experience. Participants described the dose as “surely one of the most important factors for a safe psychedelic experience”. While some psychedelic doses can be easily measured, others, such as “LSD in tab form cannot be easily measured at home”. Participants reported that “starting with a smaller dose” and then having a larger dose the next time (as opposed to redosing within a single session) is “a good harm reduction practice”. The dose consumed (as well as other components of set and setting) were important factors underlying the choice to engage in harm reduction practices:
“I wouldn't do many of the harm reduction activities if I were taking a low dose, with friends, in a familiar setting. But if I were taking a very high dose (as I sometimes do in a solo therapeutic setting), then I'll do loads of harm reduction.” (male, 40, 40 uses)
Theme 3. Importance of set and setting
“Set and setting” were inextricably linked, such that a positive setting ensured a positive set, and these were referred to by participants either explicitly, or by describing the actions they take to ensure these were optimal for their experience. These actions were largely around creating safe, calm spaces and reducing stress and anxiety. Participants took set and setting seriously:
“I have rules when I trip. I don’t trip unless I know for a fact I have nothing to do the next day, I won’t trip if I’m already tired, stressed out, or depressed. I make sure I have music playing, and that I can be left alone” (male, 18, 40 uses)
Subtheme 3.1. Set and setting to improve positive experiences
Participants suggested that the actions they take to improve their set and setting largely were focused on improving the psychedelic experience, as opposed to reducing harm:
“psychedelics aren't half as scary as most make them out to be. As long as your set and setting is good…it can be a real enlightening experience” (male, 19, 45 uses)
Indeed, many participants distinguished between practices which reduced harms and those which increased the likelihood of positive effects, with one participant noting that many of the practices “didn't affect the safety of the psychedelic experience, [they did] affect the experience, just not the safety of it” (female, 25, 300 uses).
Participants felt that one of the harm reduction practices listed in the survey should have been “making sure you are in a good mood before tripping”. Participants talked about the importance of clearing their minds before a psychedelic experience, through meditation or mindfulness practices. Others described how it is “essential” to make “sure that you have no prior commitments on the day of the trip…[and] limit the amount of time you are looking at devices (specifically your phone + social media) before and during a trip” (male, 19, 6 uses).
Subtheme 3.2. Darkness versus light
One of our harm reduction ‘myths’, which is advised against on multiple harm reduction websites was ‘being in a dark room / place’. Approximately 35% of participants reported being in a dark room and this practice received a Harm Reduction Score close to zero, indicating that it was neither deemed beneficial nor detrimental to a safe experience. Participants highlighted that for this approach, the effects depend on other aspects of set and setting, such that it could be “scary if you feel alone” or “at a club this could be disorienting”, with one participant describing how this approach is a good example of how “not all harm reduction techniques affect everyone the same way. For example, some people may want to sit in a dark room and some people may not” (male, 18, 8 uses). Indeed, other participants noted that “being in a dark room can enhance the trip” or “can be good if it’s too intense” (male, 39, 200 uses).
Subtheme 3.3. Tripping alone versus in company
Tripping alone is also advised against on many drug harm reduction websites, although participants were ambivalent about this. Participants described a variety of different preferred scenarios: tripping alone, tripping with a sober friend, tripping with a sober guide and tripping with trusted co-trippers. Our quantitative analysis indicated that the majority of participants reported that they were with trusted friends for both experiences and this practice received a high Harm Reduction Score, while few participants reported having an unintoxicated trip sitter present and this practice received a low Harm Reduction Score.
Participants acknowledged that different approaches would be required for different people, based both on their experience and the type of trip they were planning. For example, “people with more experience might have no need for a tripsitter, while…its absolutely necessary for someone trying the first time”. Indeed, one participant described their first psychedelic trip which taught them that “harm reduction practices are extremely important” and the “really bad experience” they had “could have been avoided [by having] an unintoxicated tripsitter, safe space, music playlist”. Others suggested that having a sober tripsitter can be unhelpful as “being in different consciousness states makes communicating harder and can lead to "bad vibes" or bad situations”. Many participants described the importance of being with “knowledgeable people you trust deeply, who will support your journey and who will keep you safe from harm” (male, 24, 8 uses). Others described the importance of a guide, and
“heavily advise that people considering it for therapy and have no experience to do it in a professional setting such as a qualified psychedelic retreat when possible, or at least to have it with someone who has experience. Avoiding thoughts of an isolating negative nature is also recommended by checking them with the trip sitter as often times they would be exaggerated or not true due to tripping”. (male, 20, 12 uses)