Category Archives: Compulsion
Dream lovers: Can lucid dreaming be addictive?
Last week I watched the South Korean film Lucid Dream (a 2017 Netflix original that premiered on June 2), the directorial debut by Kim Joon-sung. For those who don’t know, lucid dreams are those in “which the dreamer is aware of dreaming. During lucid dreaming, the dreamer may be able to exert some degree of control over the dream characters, narrative, and environment” (Wikipedia). The reason I mention this is because one of the characters in the film claims he is ‘addicted’ to lucid dreams. Obviously the use of the word ‘addicted’ in this context piqued my interest (in what must be said was a mediocre film).

I’ve been fascinated by lucid dreams even before I knew what they were. Although I’ve suffered from insomnia for most of my life, I’m also someone that has very vivid dreams when I sleep. I learned a lot more about lucid dreaming during my PhD at the University of Exeter because one of my best friends (Rob Rooksby) was carrying out research into the area. Over the course of a few years, I had many conversations with Rob about the topic (both professional and personal) because I had experienced lucid dreams myself (and still do).
One of the academics that Rob mentioned many times to me was the psychologist Dr. Jayne Gackenbach who at the time was editor of a journal called Lucidity Letter (and in which Rob had a couple of papers published in, see ‘Further reading’ below. By co-incidence, I came to know Dr. Gackenbach professionally in the 1990s and since then I have written three chapters in some of her edited books – two on internet addiction and one on Game Transfer Phenomena – also see ‘Further reading’ below). In a short 1987 paper in Lucidity Letter, Dr. Gackenbach claimed that lucid dreaming could be potentially addictive:
“I would caution against taking an attitude toward the lucid dream state of it being unrelated to waking life. This could result in undue absorption in lucid dreaming, leading potentially to addiction (see the letter by Barroso in [the December, 1987] issue of Lucidity Letter for an excellent example)…After hearing about Tholey’s training of an Olympic athlete with dream lucidity, a colleague spontaneously remarked, “Dream lucidity is really the ultimate drug!” Yes, the state has that potential. But so too comes the potentiality of abuse through ignorance of proper use and possibly addiction”.
Consequently, I managed to track down a copy of Mark Barroso’s 1987 published letter where he asserted that:
“I would like to comment on how lucid dreaming became counterproductive. Like most everything else I’ve enjoyed, too much of it could be very destructive. Living in the dream world became preferable to reality. I would lay in bed, miss work, and wrap myself in a catatonic state in which to spin dreams, dreams, dreams. I would sleep in public places to use various stimuli for my lucid dreams: a park, a downtown bench, the beach, park the car near a school yard of children playing. If you have mastered lucid dreaming, you should try this, it really is incredible. Real and random sounds factor in the dream. Basically, all I did was lucid dream and nothing else. With a life like that it could be hard to pay the rent. So I just stopped. Over time I lost the ability to lucid dream…Although I never regarded myself as having a special ability, it never occurred to me that others did this as well. I finally “O.D.’d” on lucid dreaming when I stayed in bed for 4 or 5 days, only rising to drink and use the bathroom. I was a hermit with no other ambition. I got a job where people were counting on me to show up and found within me the motivation to shake the cobwebs from my eyes”.
Although I am highly sceptical that lucid dreaming can be potentially addictive, Barroso’s letter does contain anecdotal evidence at least suggestive of addiction-like symptoms where lucid dreaming completely took over his life and impacted negatively on every area of his life. These aren’t the only references to ‘lucid dreaming addiction’ in the academic literature. In a 1990 book by Dr. Stephen LaBerge and Dr. Howard Rheingold entitled Exploring The World of Lucid Dreaming, one chapter (‘Preparing for learning lucid dreaming’) featured a ‘Q&A’ section including the following question and answer:
“Q. Lucid dreams are so exciting and feel so good that real life pales by comparison. Isn’t it possible to get addicted to them and not wish to do anything else?
A. It may be possible for the die-hard escapist whose life is otherwise dull to become obsessed with lucid dreaming. Whether or not this deserves to be called addiction is another question. In any case, some advice for those who find the idea of “sleeping their life away” for the sake of lucid dreaming is to consider applying what they have learned in lucid dreams to their waking lives. If lucid dreams seem so much more real and exciting, then this should inspire you to make your life more like your dreams – more vivid, intense, pleasurable, and rewarding. In both worlds your behavior strongly influences your experience”.
Another similar Q&A featured on the World of Lucid Dreaming (WLD) website founded by Rebecca Turner. One of the WLD readers (‘Nikki’) asked Turner: “Is lucid dreaming addictive? I really want to have lucid dreams but I read that lucid dreaming is really addictive and this worries me. Would you compare this need to taking drugs? How do you keep control over it?” Turner responded by saying: “I [too] have read in the media that “lucid dreaming is addictive” but this is a poor use of language. They are trying to say that it’s highly enjoyable and you’ll want to do it more”.
As far as I am aware, no empirical study has ever examined addiction to lucid dreaming although there are plenty of individuals on various lucid dreaming online forums who have claimed that such activity can be addictive from either their own experiences or by those known to them. Here are a few of the more detailed examples I have come across:
- Extract 1: “I first lucid dreamed purposely about 5-6 years ago. For the past year and a half. I’ve lucid dreamed every single night, except when I’m really drunk, I don’t seem to dream then. I have a bit of an addictive personality, I smoke weed every day. I have a sex in my dreams very often, a few times a week, and they almost always end up with an orgasm and a wet awakening later. I always just have the greatest times and see the greatest things while I’m dreaming. But it is getting harder and harder to get up in the morning. I will sleep an extra 2-3 hours after I want to wake up because I don’t want to leave the dream world, and I find if I go to sleep while the dream is fresh in my mind still I can continue it with ease. I have lost many jobs, and fucked up many opportunities because I couldn’t get out of bed in the morning…Now I am on welfare, get money from the government every month, and I sleep all the time, I have no set sleep schedule, I sleep in the day, I sleep at night, I sleep whenever I feel like it. I feel like the second my head hits the pillow I’m sucked into another world in my head. I daydream whenever I’m not sleeping, I’ve lost track of time. My whole world feels like a lucid dream now” (Steezy 233).
- Extract 2: I think I spend at least half of my nights lucid dreaming. I never get tired of it…I love the world my mind creates every night…I have a really long history with lucid dreaming and hallucinations, but if I were to go that in-depth this post would end up being a novel or something. Long story short, I used to have hypnagogic hallucinations and sleep paralysis every night when I was young (4-10, I think)…Then one night I had my first lucid dream, and did some investigating…I became better and better at lucid dreaming, and somehow parts of my dream world have become consistent (architecture, people, holidays even). I love living in the dream world. It’s fun, and horrifying at times, but either way it’s exciting. But in the day, everything is drab. Living feels so dull and dead and repetitive and stressful…I love dreaming. I’m depressed when I’m not dreaming. Sometimes I wish I could dream and never wake up. I’m not suicidal or anything dangerous like that…I don’t really want people I know to know I have this addiction to dreaming” (‘JDBar’).
- Extract 3: “When I first learned how to induce lucid dreams as a teenager, and then program the dream I wanted to have, it was intoxicating! Every night before I went to sleep I would have to decide if I wanted to do something romantic with a hunky male movie star, or save the world as Storm from the X-Men, or work on astral projection, or try to contact my friends who were also lucid dreaming, etc. I was practically living a double life because my night life was vastly different than my waking life. I was becoming addicted to the pleasures of lucid dreaming. That habit led to some unfortunate experiences, however. The more I explored the dream world and different planes of existence, the less connected I was to my waking life. This was not at all healthy. It would take too long to explain everything that happened…but suffice it to say, it nearly destroyed my sanity. I eventually decided I had to plug back into my “real” life and leave some of the other world behind. It took a couple of years to reconnect with the living instead of the astral” (Erin).
- Extract 4: “Well, I’ll admit that I went through a bad stage last year. I had high levels of anxiety and depression and I saw lucid dreaming as a way to escape from everything that was going on at school and in my life. I would even fake sick just to stay home and sleep all day to lucid dream. But something just changed lately and I’m no longer depressed…I don’t rely on lucid dreaming like I used to, instead I just see it as some fun. I wouldn’t say there’s any real reason not to lucid dream, though. It’s a lot of fun and can help with night terrors and nightmares” (Daydreamer14).
Most accounts I have come across online see the benefits of lucid dreaming as far outweighing any negatives. In fact, I came across a few websites claiming that lucid dreaming can be used as a method of overcoming more traditional addictions (similar to the idea of Dr. Bill Glasser’s positive addictions that I examined in a previous blog). For instance, at the Lucid Dream Leaf website it was claimed that:
“Lucid dreaming has a seemingly endless list of benefits attached to it. It can help people who are struggling with emotional pain, end recurring dreams and nightmares, expand consciousness, and so on. In addition to all of this, regular lucid dreaming practice can also be a useful tool to those in recovery (or moving toward recovery) from addictions”.
Other websites (such as the Remedy Free website) provide advice on how to overcome addiction to lucid dreaming or how to overcome problems with lucid dreaming (‘7 nasty side effects of lucid dreaming and how to fix them’ and ‘Lucid dreaming dangers – Obsession [Addiction]’). Although I’ve argued that any activity can be potentially addictive as long as there are constant rewards from the activity, lucid dreaming can only occur when an individual is asleep, so unless someone is constantly sleeping, it doesn’t appear it could be an addiction by my own criteria – but as ever, I am happy to be proved wrong. I ought to add that some online articles (such as one on the Dreaming Life blogsite) claim that lucid dreaming can be a consequence of ‘sleeping addiction’ (but I’ll leave that for another blog).
Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Further reading
Barroso, M., (1987). Letter to the Editor. Lucidity Letter, 6(2). Retrieved from https://journals.macewan.ca/lucidity/article/view/763/704
Gackenbach, J. (1987). Clinical and transpersonal concerns with lucid dreaming voiced. Lucidity Letter, 6(2), 1-4.
Glasser, W. (1976), Positive Addictions. Harper & Row, New York, NY.
Griffiths, M.D. (1998). Internet addiction: Does it really exist? In J. Gackenbach (Ed.), Psychology and the Internet: Intrapersonal, Interpersonal and Transpersonal Applications (pp. 61-75). New York: Academic Press.
LaBerge, S., & Rheingold, H. (1990). Exploring The World of Lucid Dreaming. New York: Ballantine Books.
Ortiz de Gortari, A.B. & Griffiths, M.D. (2012). An introduction to Game Transfer Phenomena in video game playing. In J. Gackenbach (Ed.), Video Game Play and Consciousness (pp.223-250). Hauppauge, NY: Nova Science.
Rooksby, R. (1989). Problems in the historical research of lucid dreaming. Lucidity Letter, 8(2), 75-80.
Rooksby, B., & Terwee, S. (1990). Freud, van Eeden and lucid dreaming. Lucidity Letter, 9(2), 1-10.
Widyanto, L. & Griffiths, M.D. (2006). Internet addiction: Does it really exist? (Revisited). In J. Gackenbach (Ed.), Psychology and the Internet: Intrapersonal, Interpersonal and Transpersonal Applications (2nd Edition), (pp.141-163). New York: Academic Press.
Wikipedia (2017). Lucid dream. Located at: https://en.wikipedia.org/wiki/Lucid_dream
Doctor, doctor: What can British GPs do about problem gambling?
A study published in the British Journal of General Practice in March 2017 reported that of 1,058 individuals surveyed in GP waiting rooms in Bristol (UK), 0.9% were problem gamblers and that a further 4.3% reported gambling problems that “were low to medium severity”. This is in line with other British studies carried out over the last decade which have reported problem gambling prevalence rates of between 0.5% and 0.9%.
I have long argued that problem gambling is a health issue and that GPs should routinely screen for gambling problems. Back in 2004, I published an article in the British Medical Journal about why problem gambling is a health issue. I argued that the social and health costs of problem gambling were (and still are) large at both individual and societal levels.

Personal costs can include irritability, extreme moodiness, problems with personal relationships (including divorce), absenteeism from work, neglect of family, and bankruptcy. Adverse health consequences for problem gamblers and their partners include depression, insomnia, intestinal disorders, migraine, and other stress related disorders. In my BMJ article I also noted that analysis of calls to the GamCare national gambling helpline indicated that a small minority of callers reported health-related consequences as a result of their problematic gambling. These included depression, anxiety, stomach problems, and suicidal ideation. Obviously many of these medical problems arise through the stress of financial problems but that doesn’t make it any less of a health issue for those suffering from severe gambling problems.
Research published in the American Journal of Addictions has also shown that health-related problems can occur as a result of withdrawal effects. For instance, one study by Dr. Richard Rosenthal and Dr. Henry Lesieur found that at least 65% of pathological gamblers reported at least one physical side effect during withdrawal, including insomnia, headaches, loss of appetite, physical weakness, heart racing, muscle aches, breathing difficulty, and chills.
Based on these findings, problem gambling is very much a health issue that needs to be taken seriously by all in the medical profession. GPs routinely ask patients about smoking cigarettes and drinking, but gambling is something that is not generally discussed. Problem gambling may be perceived as a grey area in the field of health, and it is therefore very easy for those in the medical profession not to have the issue on their wellbeing radar. If the main aim of GPs is to ensure the health of their patients, then an awareness of gambling and the issues surrounding it should be an important part of basic knowledge and should be taught in the curriculum while prospective doctors are at medical school. One of the reasons that GPs don’t routinely screen for problem gambling is because they are not taught about it during their medical training and therefore do not even think about screening for it in the first place. As I recommended in a report commissioned by the British Medical Association, the need for education and training in the diagnosis, appropriate referral and effective treatment of gambling problems must be addressed within GP training. More specifically, GPs should be aware of the types of gambling and problem gambling, demographic and cultural differences, and the problems and common co-morbidities associated with problem gambling. GPs should also understand the importance of screening patients perceived to be at increased risk of gambling addiction, and should be aware of the referral and support services available locally.
I also recommended that treatment for problem gambling should be provided under the NHS (either as standalone services or alongside drug and alcohol addiction services) and funded by gambling-derived profit revenue.
Back in 2011, Dr. Jane Rigbye and myself published a study using Freedom of Information requests to ask NHS trusts if they had ever treated pathological gamblers. Only 3% of the trusts had ever treated a problem gambler and only one trust said they offered dedicated help and support. I’m sure if we repeated the study today, little will have changed.
It is evident that problem gambling is not, as yet, on the public health agenda in the UK. NHS services – including GP surgeries – need to be encouraged to see gambling problems as a primary reason for referral and a valid treatment option. Information about gambling addiction services, in particular services in the local area, should be readily available to gamblers and GP surgeries are a good outlet to advertise such services. Although some gambling services (such as GamCare, the gambling charity I co-founded) provide information to problem gamblers about local services, such information is provided to problem gamblers who have already been proactive in seeking gambling help and/or information. Given that very few GPs could probably treat a problem gambler, what they must have is the knowledge of who they can refer their patients to.
Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Further reading
Calado, F. & Griffiths, M.D. (2016). Problem gambling worldwide: An update of empirical research (2000-2015). Journal of Behavioral Addictions, 5, 592–613.
Cowlishaw, S., Gale, L., Gregory, A., McCambridge, J., & Kessler, D. (2017). Gambling problems among patients in primary care: a cross-sectional study of general practices. British Journal of General Practice, doi: bjgp17X689905
Griffiths, M.D. (2001). Gambling – An emerging area of concern for health psychologists. Journal of Health Psychology, 6, 477-479.
Griffiths, M.D. (2004). Betting your life on it: Problem gambling has clear health related consequences. British Medical Journal, 329, 1055-1056.
Griffiths, M.D. (2007). Gambling Addiction and its Treatment Within the NHS. London: British Medical Association (ISBN 1-905545-11-8).
Griffiths, M.D. & Smeaton, M. (2002). Withdrawal in pathological gamblers: A small qualitative study. Social Psychology Review, 4, 4-13.
Rigbye, J. & Griffiths, M.D. (2011). Problem gambling treatment within the British National Health Service. International Journal of Mental Health and Addiction, 9, 276-281.
Rosenthal, R., & Lesieur, H. (1992). Self-reported withdrawal symptoms and pathological gambling. American Journal of the Addictions, 1, 150–154.
Wardle, H., Moody. A., Spence, S., Orford, J., Volberg, R., Jotangia, D., Griffiths, M.D., Hussey, D. & Dobbie, F. (2011). British Gambling Prevalence Survey 2010. London: The Stationery Office.
Wardle, H., Sproston, K., Orford, J., Erens, B., Griffiths, M.D., Constantine, R. & Pigott, S. (2007). The British Gambling Prevalence Survey. London: The Stationery Office.
Digital desires: A brief look at sexual thumb sucking and thumb fetishism
In previous blogs I have examined a number of extreme behaviours involving hands (both sexual and non-sexual) including hand wear fetishism, fingernail fetishism, ‘hands on hip’ fetishism, alien hand syndrome, ‘touch the truck’ endurance television, and thumb sucking as an addiction. However, it was while I was researching a previous blog on belly inflation fetishes that I came across a man who on the Yahoo! Answers website claimed he had a belly inflation fetish and a thumb fetish along with another person who responded saying he also shared the same fetish:
- Extract 1: “Another weird fetish I have is ‘hitchhiker’s thumb’. Hitchhikers thumb is when the top part of your thumb bends backwards when pushed on or fully extended…The hitchhiker’s thumb fetish developed when I found out that my cousins could do it. I would ALWAYS ask questions about it and I would bend her thumbs back and forth for hours. And I just get turned on by it now…is this weird?” (Male, sexual orientation unknown)
- Extract 2: “I [also] have a fetish for bendy thumbs hence the profile pic. It’s all good I say whatever turns u on and if not hurting anyone then it’s cool” (Male, sexual orientation unknown)
Although I have read about (i) thumb bondage (mentioned in a 2007 book chapter on themes of sadomasochistic expression by Dr. Charles Moser and Dr. Peggy Kleinplatz) and (ii) thumb sucking by adult babies that are into paraphilic infantilism, I had never read anything on standalone thumb fetishes. (I would also point out that the ‘thumb sucking’ is just one of many baby-like behaviours that paraphilic infantilists enjoy but do not necessarily see as a source of arousal in and of itself). There is also those who say that they engage is ‘thumb sex’ and defined by the online Urban Dictionary as “when two people hold hands and run their thumbs around the other persons thumb or twiddle the thumbs”. There are also (for want of a better word) ‘cultural’ references to thumb fetishes such as the instrumental song ‘Mayor Oscar Goodman’s Thumb Fetish’ by US deathcore band Molotov Solution.

As far as I am aware there has never been any empirical research on thumb fetishism. There are various online websites and forums that feature individuals that claim to have very specific types of thumb fetishes. This is one of the more specific that I found:
- Extract 3: “I’m a 34 year old men and I have thin thumbs (each ones have the same width as an American/Canadian penny, that’s 0.74 inch or 19 millimeters). I got a fetish that seems to be pretty rare. It consists of being turn on by comparing my thin thumbs with a woman that has larger ones than mine. Also, the younger the woman is with larger thumbs, the better. It’s pretty inoffensive, but rare I think” (Male heterosexual).
There are also whole webpages dedicated to the sexiness of thumb sucking. Here are some of the online accounts I found on the Thumb Sucking Adults website. They begin by noting that adult thumb sucking is “sexy. This fact shouldn’t be too surprising in that it involves the sensual oral center [and] so much of what is human has become sexualized in one way or another that thumb sucking adults is just another part of the total picture”. They then highlight some of their readers’ experiences:
- Extract 3: “I am a bisexual woman who finds other women sucking their thumbs extremely erotic…First of all, growing up, I had a very close friend who lived down the street from me who also sucked her thumb. Experimenting with sex at a very early age…[she] and I would spend hours together exploring our bodies and touching each other. We learned how to masturbate and although I was so young, I discovered how to reach orgasm. I think perhaps Janice and I shared a certain closeness in our friendship and later in our intimacy because we both sucked our thumbs and felt accepted by each other if not by peers who seemed to ridicule us…I can summarize that my earliest, deepest feelings of sexual desire were connected to both thumb sucking and a female partner. Many years passed and I dated men here and there, but never quite felt emotionally or sexually fulfilled [as with women]…From the e-mails I’ve read on your site, I have also noticed that it is mostly the men who find thumbsucking erotic. Perhaps as a woman who is mostly gay and possesses some traits and attributes more commonly associated with men…I am more turned on by this than other women. And why does it turn me on? I’m sure it has to do with my childhood friend and the feelings associated with that particular behavior”(Bisexual female).
- Extract 4: “The arousal that naturally occurs when I do it. Thumb in mouth…hand on penis. This goes way back. I had contributed an early ‘embarrassment’ to [another website] saying that I watched a home movie in front of all our relatives and there was this shot of me, around 3 years old, standing by the garage, thumb in mouth, hand holding crotch. I had never seen that before. There was devilish laughter. I laughed along, but was shocked. I do remember a dry climax sucking my thumb when I was about 6 or 7. And my first real emission at age 12 or 13 involved thumb sucking in my bed. So it is very ingrained in me. The physical feeling of doing it brings such erotic pleasure. When I first insert my thumb in my mouth, pressing it against my palate and rubbing it back and forth about 1/2″, the stimulus begins. I don’t suck continuously. I do it for 1-2 minutes and take my thumb out for about 20 seconds and then put it back in. Each time it gets better and better. The key thing is that my thumb gets wetter and softer and SMOOTHER against my palate. I am very curious if anyone else sucks their thumb this way. I don’t actually SUCK it. I rub it. The other important part is that as I rub it, my tongue proceeds to pulsate. It’s involuntary. There’s no stopping it as long as I connect with the right spot on my palate. This enhances the feeling greatly. This dual rubbing, pulsating action. My thumb would have to be cut off to stop me from doing it. The last part of sexuality in thumb sucking is observing others doing it. I have to be honest in saying that watching…is an immense turn-on. Fortunately, I know I can control my desires” (Heterosexual male)
- Extract 5: “Larry finds many things attractive in a woman. One of these things, apparently, is that she sucks her thumb. It probably is not essential that she does so (if it was, we’d be talking more along the lines of a fetish) but, if she does suck her thumb, he finds that attractive, whatever the underlying psychodynamics. I propose that his preferences aren’t much different than, say, another man’s predilections for big-breasted women, though both allures aren’t necessarily exclusive…There are societal stigmas associated with the habit. Try sucking your thumb whenever you want to and you’ll see that at least an undue amount of attention will be focused your way for a while. The point is, perhaps as adult thumb sucking becomes more widely known, it is natural that some out there will find it an endearing quality in a person…For the adult thumb sucker, this site has been liberating…And, in the case of Larry, the fact that he has felt solitude in his thumb sucking, all his adult life, it’s certainly understandable to me that among all the feelings that are engendered when he sees it in another for the first time…[This website] simply proposes that adult thumb sucking is more common than otherwise assumed and should be accepted since it is, essentially, harmless and, for those that indulge, beneficial. As for thumb sucking being sexually provocative, I suppose that anything human can be sexualized by others eventually. As long as it’s legal, what’s wrong with that?” (Gender and sexual orientation unknown)
- Extract 6: “I love adult women who still suck on their thumb. Since I was a kid, I felt an attraction for girls sucking their thumbs. My twin sister sucked her thumb till she was 16 years old! When I first started masturbating at age 12, I thought of a girl sucking her thumb. I’ve always looked for women that sucked their thumb and then ask them to suck it for me. When I was 18, I met a girl I suspected of still sucking her thumb. Strangely, I noticed she didn’t have any marks or callus on her thumb. But from time to time, I saw teeth marks and lipstick marks on her thumb…We started to have thumb sucking sex and I loved it. She liked it also. We stayed together four years. It became a habit. She’d suck her thumb for me and then I’d suck her thumb while we made love. I never sucked my thumb but now I suck my thumb while masturbating and thinking about my former girlfriend’s thumb or another girl’s thumb. I always look for women sucking their thumbs in their cars while driving. I have seen three in all the years I have looked. Those times were awesome. I never tried to make contact. I am married now, but my wife never sucks her thumb. She will do it if I ask her, but that isn’t the same. I like it when an adult woman does it naturally…I love a woman with a thumb callus and nice teeth (there are a few). I love to see a wet thumb. I like it when an adult sucks her thumb with the index finger over the nose. I find that very sexy” (Heterosexual male).
- Extract 7: “I find thumb sucking sensual, sexual, erotic, comforting, calming…It’s like catching someone at their most vulnerable. Partly because of its social taboo, it can even be slightly ‘naughty’…But it is an exciting thought to me to perhaps one day ‘catch’ someone else thumb sucking. Thumb sucking provides sensations around the mouth and nose that can be reproduced during sex or loveplay, although thumb sucking is less tiring. It feels nice, smells nice, tickles [the] pleasure centers. It provides the sensations of skin-to-skin warmth that I think everyone of us craves…It’s sensual, it’s intimate. But it’s also sensual and sexual. I find myself sucking my thumb after sex much like I might grab for a cigarette…But I think that thumb sucking is by far more satisfying and truly far less addicting [than smoking]. And definitely far less damaging…Quite honestly I didn’t find out how much I found finger and thumb sucking an exciting part of foreplay and sex until I was 23” (Heterosexual female).
- Extract 8: “I suck my thumb for the usual reasons, tension relief, to go to sleep, it feels good. But, I notice that other contributors here suck their thumb because it also feels erotic, and, I have to say, I agree…When I’m aroused, it enhances the feeling so much more. So it’s obvious that I’ve learned to associate my thumb sucking with something sexual…When I look at the photos of women at this site, sucking away, I just find them so beautiful, so sexually enthralling….First off, there’s the lips. I think most people can understand why lips can be very erotic. I don’t want to get into heavy psychology, but, let’s face it, lips are sexy, especially full lips, parted ever so slightly. They’re like an invitation to something exciting…When I see a woman’s full lips open just a bit, my tongue gets an irresistible urge to explore her sweet mouth…If her teeth were affected by thumb sucking, all the better. The thought that she can’t stop her habit, and the pleasure she derives from it, even if her teeth are affected to the point of obvious buckedness adds that much more to my sensation…She looks like something innocent, childlike but not a child. Her profile, exaggerating her now protrusive lips, wrapped around a phallus-like object that is her compulsion, her requirement, her urgency…I want her thumb to feel comfortable in my mouth as I experience, once again, her essence, her habit as mine” (Heterosexual male).
Obviously this is just a small selection of online accounts of sexual thumb sucking I have come across and I can’t know for sure that they are genuine (but they appear that way to me). Also, I have no idea whether these are typical but I can make a few tentative conclusions. Firstly, both males and females can find thumb sucking sexually stimulating. Secondly, sexual thumb suckers tend to be heterosexual (although one account was from a bisexual woman). Thirdly, most experiences of sexual thumb sucking are rooted in childhood experiences and that the acquisition and development of such behaviour is related with associative pairing (i.e., classical conditioning). Fourthly, no-one pathologizes the behaviour, and as long as the act is consensual, there is absolutely nothing wrong with the behaviour as a sexual preference. Finally, none of the accounts suggest the sexual thumb sucking is fetishistic – just that it is a non-normative sexual expression that fits alongside their other sexual experiences.
While researching this article I also came across the remarkable story of American Rafe Briggs (from Oakland, California) in a 2013 issue of the International Business Times. In 2004, Biggs fell off a roof and broke his neck leaving him paralyzed from the chest down. He obviously thought he would never experience any kind of sexual pleasure again but he was wrong:
“Turns out he can. Biggs, 43, says that his thumb is his ‘surrogate penis’, and that he gets ‘orgasmic sensations’ whenever it’s stimulated. ‘I never thought it would be possible, but massaging and sucking on my thumb, feels a lot like my penis used to feel – it’s really hot” said Biggs, whose girlfriend helped him discover this phenomenon a year after the accident. Sex therapists like Lisa Skye Carle, who works with Biggs, calls it a ‘transfer orgasm – where another place on the body gives the same sensation”. Biggs has made it his mission to helping quadriplegics lead sexually fulfilling lives, working with the group ‘Sexability’ an ‘organization committed to empowering people with disabilities to explore sexuality and creating intimate loving relationships. Since our beginning in 2006, we have been working with individuals, groups and organizations to transform sexuality and disability’. ”
Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Further reading
Huffington Post (2013). Rafe Biggs’ thumb has become his ‘surrogate penis’ after accident left him paralyzed, April 22, Located at: http://www.huffingtonpost.com/2013/04/22/rafe-biggs-thumb_n_3132325.html?utm_hp_ref=weird-news
Moser, C., & Kleinplatz, P. J. (2007). Themes of SM expression. In D. Langdridge & M. Barker (Eds.) Safe, sane & consensual: Contemporary perspectives on sadomasochism. (pp. 35-54). Hampshire, UK: Palgrave Macmillan.
Thumb Sucking Adults (undated). Why [thumb sucking] is sexy. Located at: http://www.thumbsuckingadults.com/mytsingissexypage.htm
Tungol, J.R. (2013). Paralyzed man Rafe Biggs has ‘orgasmic sensations’ through his thumb, ‘surrogate penis’ International Business Times. April 22. Located at: http://www.ibtimes.com/paralyzed-man-rafe-biggs-has-orgasmic-sensations-through-his-thumb-surrogate-penis-1208099
Nag, nag, nag: Another look at horse race betting and problem gambling
Literature reviews carried out by myself and others in the gambling studies field have concluded that electronic gaming machines (EGMs such as slot machines, pokie machines, video lottery terminals [VLTs], etc.) tend to have a higher association with problem gambling than other forms of gambling. Although any form of gambling can be potentially problematic, there is surprisingly little in the academically peer-reviewed gambling literature showing that horse race betting has a high association with problem gambling, particularly in comparison to activities such as EGM gambling.
Along with individual susceptibility and risk factors of the individual gambler, the most important determinants in the development and maintenance of problem gambling are structural characteristics, particularly those relating to the speed and frequency of the game (and more specifically event frequency, bet frequency, event duration and payout interval). More specifically, I have argued that researchers in the gambling studies field need to think about game parameters rather than specific game type when it comes to any association with problem and pathological gambling and that event frequency is the single most important determinant.

A study by Dr. Debi LaPlante and colleagues in the European Journal of Public Health examining types of gambling and level of gambling involvement (using data from the 2007 British Gambling Prevalence Survey of which I was one of the co-authors) indicated that when level of gambling is accounted, no specific type of gambling was associated anymore with disordered gambling, and that level of involvement in gambling better characterizes problem gambling than individual forms of gambling. In fact, this paper also concluded that:
“Two games, private betting and betting on horses, had a reversal of association. After controlling for involvement, individuals who engaged in private betting or betting on horses were significantly less likely to have gambling-related problems than people who did not…One interesting, and perhaps unanticipated, finding was that the nature of the relationships between private betting and betting on horses and gambling problems changed when we considered the influence of involvement: engaging in these types of gambling, but not other types, seemed to protect players against developing gambling problems. This finding suggests that the apparent risk between gambling activities and developing gambling-related problems resides, perhaps primarily or even entirely, among individuals who have high rates of involvement. For others who do not have high rates of involvement, playing these types of games might reflect social setting characteristics (e.g. norms) that encourage control and preclude excessive gambling”.
Similar results were also found in an Australian study by Dr. James Phillips and his colleagues in a 2013 issues of the Journal of Gambling Studies. A 2009 study by Dr. Thomas Holtgraves in the journal Psychology of Addictive Behaviors analysed all data from population-based surveys conducted in Canada between 2001 and 2005 comprising 21,374 participants (including 12,229 who had gambled in the past year). Using the Problem Gambling Severity Index to assess problem gambling, the study found that horse race gamblers had the lowest prevalence rates of problem gambling along with those that played bingo and bought raffle tickets (3%). Some types of gambling activity such as sports betting (25%) and playing video lottery terminals (18%) were much higher.
The most recent British Gambling Prevalence Survey [BGPS] published in 2011 reported that the most popular British gambling activity was playing the National Lottery (59%), a slight increase in participation from 2007 (57%). The prevalence of past-year betting on horse races was 16%. Among past year gamblers, problem gambling prevalence rates were highest among those who had played poker at a pub/club (12.8%), online slot machine games (9.1%) and fixed odds betting terminals (8.8%). The lowest problem gambling rates were among those that played the National Lottery (1.3%) and scratchcards (2.5%). Horse race gamblers also had one of the lower prevalence rates for problem gambling (2.7%). However, problem gamblers also gamble on many different activities and problem gambling prevalence was highest among those that gambled on nine or more different activities on a regular basis (28%).
More recently in 2014, Carla Seabury and Heather Wardle published an overview of gambling behaviour in England and Scotland by combining the data from the Health Survey for England and Scottish Health Survey (n=11,774 participants). It was reported that two-thirds of the sample (65%) had gambled in the past year, with men (68%) gambling more than women (62%). The findings were similar to the previous BGPS reports and showed that in terms of past-year gambling, the most popular forms of gambling were playing the National Lottery (52%; 56% males and 49% females) and scratchcards (19%; 19% males and 20% females). One in ten people (10%) had a engaged in horse race betting (12% males and 8% females).
Again, problem gambling rates were also examined by type of gambling activity. Results showed that among past year gamblers, problem gambling was highest among spread betting (20.9%), playing poker in pubs or clubs (13.2%), bet on events other than horse racing with a bookmaker (12.9%), gambling at a betting exchange (10.6%) and playing machines in bookmakers (7.2%). The activities with the lowest rates of problem gambling were playing the National Lottery (0.9%) and scratchcards (1.7%). Problem gambling among horse race gamblers were also among the lowest (2.3%). Problem gambling rates were highest among individuals that had participated in seven or more activities in the past year (8.6%) and lowest among those that had participated in a single activity (0.1%).
Along with Filipa Calado, I recently co-authored two reviews of problem gambling worldwide (one on adult gambling and one of adolescent gambling). None of the studies we reviewed highlighted horse racing to be of particular concern in relation to problem gambling and only two countries (France and Sweden) was horse race betting one of the most preferred and prevalent forms of gambling. Analysis of a 2011 French national prevalence survey by Dr. Jean-Michel Costes reported that horse race betting was fourth in a list of six gambling activities that were most associated with problem gambling (with Rapido [a high event frequency lottery game], sports betting, and poker being the most problematic gambling forms). There is also evidence from gambling treatment service providers that horse race betting is much less of an issue than other forms of gambling. In Finland, the national helpline for problem gamblers, [Peluuri] only 1% of the telephone calls received concern horse betting. In Germany, two studies surveying therapists that treat problem gambling found that the vast majority of treatment was for slot machine gamblers (approximately 75%-80% of clients) whereas treatment for horse race gamblers was 0.6%-1.7% of clients. Unfortunately, the UK problem gambling helpline run by GamCare does not separate horse race betting from any other sports betting in its’ annual helpline statistics. The most recent (2016) GamCare report noted that 11% of their callers concerned betting in a bookmaker’s but this figure included all betting not just horse race betting.
In 2008, I was invited to write a report for the Gambling Commission and reported that internationally, the vast majority of problem gamblers that contact helplines or seek treatment report machine gambling as their primary form of gambling. In Europe many countries report that it is problem EGM gamblers that are most likely to seek treatment and/or contact national gambling helplines (rather than other forms of gambling including horse race betting) including 60% of gamblers seeking help in Belgium, 72% in Denmark, 93% in Estonia, 66% in Finland, 49.5% in France, 83% in Germany, 75% in Spain, and 35% in Sweden.
All data collected in Great Britain and elsewhere in the world demonstrate that horse race betting has a relatively low past-year participation rate. All major literature reviews have concluded that electronic gaming machines tend to have a higher association with problem gambling than other forms of gambling including horse race betting. Although no form of gambling is immune from problem gambling, horse race betting has one of the lowest associations with problem gambling. Furthermore, some analysis of the most recent BGPS data has demonstrated that after controlling for gambling involvement, individuals who engage in horse race betting are significantly less likely to have gambling-related problems than people who did not.
For the vast majority of horse gamblers, the activity is a discontinuous form of gambling in that they make one or a few bets in a small time period but then not bet again for days or weeks. Therefore, the event frequencies for betting on horse racing are much lower than other gambling activities and helps explain why there is a low association with problem gambling compared to activities that have much higher event frequencies (e.g., slot machines, roulette, blackjack, etc.).
Dr Mark Griffiths, Professor of Gambling Studies, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Further reading
Abbott, M.W. (2007). Situational factors that affect gambling behavior. In G. Smith, D. Hodgins & R. Williams (Eds.), Research and Measurement Issues in Gambling Studies. pp.251-278. New York: Elsevier.
Calado, F., Alexandre, J. & Griffiths, M.D. (2016). Prevalence of adolescent problem gambling: A systematic review of recent research. Journal of Gambling Studies. doi: 10.1007/s10899-016-9627-5
Calado, F. & Griffiths, M.D. (2016). Problem gambling worldwide: An update of empirical research (2000-2015). Journal of Behavioral Addictions, 5, 592–613.
Costes, J. M., Pousset, M., Eroukmanoff, V., Le Nezet, O., Richard, J. B., Guignard, R., … & Arwidson, P. (2011). Les niveaux et pratiques des jeux de hasard et d’argent en 2010. Tendances, 77(1), 8
Costes, J. M, Eroukmanoff V., Richard, J.B, Tovar, M. L. (2015). Les jeux de hasard et d’argent en France en 2014. Les Notes de l’Observatoire des Jeux, 6, 1-9.
Delfabbro, P.H., King, D.L & Griffiths, M.D. (2012). Behavioural profiling of problem gamblers: A critical review. International Gambling Studies, 12, 349-366.
EMPA Pari Mutuel Europe (2012). Common Position On Responsible Gambling. Brussels: EMPA.
GamCare (2016). Annual Statistics 2015/2016. London: GamCare.
Griffiths, M.D. (2004). Betting your life on it: Problem gambling has clear health related consequences. British Medical Journal, 329, 1055-1056.
Griffiths, M.D. (2007). Gambling Addiction and its Treatment Within the NHS. London: British Medical Association.
Griffiths, M.D. (2008). Impact of high stake, high prize gaming machines on problem gaming. Birmingham: Gambling Commission.
Griffiths, M.D. (2016). Problem gambling and gambling addiction are not the same. Journal of Addiction and Dependence, 2(1), 1-3.
Griffiths, M.D. & Auer, M. (2013). The irrelevancy of game-type in the acquisition, development and maintenance of problem gambling. Frontiers in Psychology, 3, 621. doi: 10.3389/fpsyg.2012.00621.
Holtgraves, T. (2009). Gambling, gambling activities, and problem gambling. Psychology of Addictive Behaviors, 23(2), 295-302.
LaPlante, D.A., Nelson, S.E., LaBrie, R.A., & Shaffer, H.J. (2009). Disordered gambling, type of gambling and gambling involvement in the British Gambling Prevalence Survey 2007. The European Journal of Public Health, 21, 532–537
Meyer, G., Hayer, T. & Griffiths, M.D. (Eds.), Problem Gaming in Europe: Challenges, Prevention, and Interventions. New York: Springer.
Parke, J. & Griffiths, M.D. (2007). The role of structural characteristics in gambling. In G. Smith, D. Hodgins & R. Williams (Eds.), Research and Measurement Issues in Gambling Studies. pp.211-243. New York: Elsevier.
Phillips, J.G., Ogeil, R., Chow, Y.W., & Blaszczynski, A. (2013). Gambling involvement and increased risk of gambling problems. Journal of Gambling Studies, 29(4), 601-611.
Seabury, C. & Wardle, H. (2014). Gambling behaviour in England and Scotland. Birmingham: Gambling Commission.
Sussman, S., Lisha, N. & Griffiths, M.D. (2011). Prevalence of the addictions: A problem of the majority or the minority? Evaluation and the Health Professions, 34, 3-56.
Wardle, H., Moody. A., Spence, S., Orford, J., Volberg, R., Jotangia, D., Griffiths, M.D., Hussey, D. & Dobbie, F. (2011). British Gambling Prevalence Survey 2010. London: The Stationery Office.
Wardle, H., Sproston, K., Orford, J., Erens, B., Griffiths, M. D., Constantine, R., & Pigott, S. (2007). The British Gambling Prevalence Survey 2007. London: National Centre for Social Research.
Fun in the sun? Does ‘tanorexia’ (addiction to sunshine) really exist?
If the many media reports are to be believed, a 2014 study published in the journal Cell claimed that “sunshine can be addictive like heroin”. In an experiment carried out on mice, a research team led by Dr. Gillian Fell at the Harvard Medical School in Boston (US) reported that ultraviolet exposure leads to elevated endorphin levels (endorphins being the body’s own ‘feel good’ endogenous morphine), that mice experience withdrawal effects after exposure to ultraviolet light, and that chronic ultraviolet causes dependency and ‘addiction-like’ behaviour.
Although the study was carried out on animals, the authors speculated that their findings may help to explain why we love lying in the sun and that in addition to topping up our tans, sunbathing may be the most natural way to satisfy our cravings for a ‘sunshine fix’ in the same way that drug addicts yearn for their drug of choice.
Reading the findings of this study took me back to 1998 when I appeared as a ‘behavioural addiction expert’ on Esther Rantzen’s daytime BBC television show that featured people who claimed they were addicted to tanning (and was dubbed by the researchers on the programme as ‘tanorexia’). I have to admit that none of the case studies on the show appeared to be addicted to tanning at least based on my own behavioural addiction criteria (i.e., salience, mood modification, tolerance, withdrawal, conflict, and relapse) but it did at least alert me to the fact that some people thought sunbathing and tanning was addictive (in fact, the people on the show said their excessive tanning was akin to nicotine addiction).

There certainly appeared to be some similarities between the people interviewed and nicotine addiction in the sense that the ‘tanorexics’ knew they were significantly increasing their chances of getting skin cancer as a direct result of their risky behaviour but felt they were unable to stop doing it (similar to nicotine addicts who know they are increasing the probability of various cancers but also feel unable to stop despite knowing the health risks).
Since then, tanorexia has become a topic for scientific investigation (and I looked at the topic in a previous blog). For instance, in a 2006 study published in the Journal of the American Academy of Dermatology by Dr. Mandeep Kaur and colleagues reported that frequent tanners (those who tanned 8-15 times a month) that took an endorphin blocker normally used to treat drug addictions (i.e., naltrexone) significantly reduced the amount of tanning compared to a control group of light tanners.
A 2005 study published in the Archives of Dermatology by Dr. Molly Warthan and colleagues claimed that a quarter of the sample of 145 “sun worshippers” would qualify as having a substance-related disorder if ultraviolet light was classed as the substance they crave. Their paper also reported that frequent tanners experienced a “loss of control” over their tanning schedule, and displayed a pattern of addiction similar to smokers and alcoholics.
A 2008 study published in the American Journal of Health Behavior by Dr. Carolyn Heckman and colleagues reported that 27% of 400 students they surveyed were classified as “tanning dependent”. The authors claimed that those classed as being tanning dependent had a number of similarities to substance use, including (i) higher prevalence among youth, (ii) an initial perception that the behaviour is image enhancing, (iii) high health risks and disregard for warnings about those risks, and (iv) the activity being mood enhancing.
Another study by Dr. Heckman and her colleagues in the American Journal of Health Promotion surveyed 306 female students and classed 25% of the respondents as ‘tanning dependent’ based upon a self-devised tanning dependence questionnaire. The problem with this and most of the psychological research on tanorexia to date is that almost all of the research is carried out on relatively small convenience samples using self-report and non-psychometrically validated ‘tanning addiction’ instruments.
Based on my own six criteria of behavioural addiction although some studies suggest some of these criteria appear to have been met, I have yet to be convinced that any of the published studies to date show genuine addiction to tanning (i.e., that there is evidence of all my criteria being endorsed) but that doesn’t mean it’s not theoretically possible. However, I’ve just done a study on tanorexia with my research colleagues at the University of Bergen and when we publish our findings I’ll be sure to let my blog readers know about it.
(Please note: A version of this article first appeared in The Conversation and The Washington Post)
Dr. Mark Griffiths, Professor of Behavioural Addiction, International Gaming Research Unit, Nottingham Trent University, Nottingham, UK
Further reading
Fell, G.L., Robinson, K.C., Mao, J., Woolf, C.J., & Fisher, D.E. (2014). Skin β-endorphin mediates addiction to UV light. Cell, 157(7), 1527-1534.
Griffiths, M.D. (2005). A ‘components’ model of addiction within a biopsychosocial framework. Journal of Substance Use, 10, 191-197.
Griffiths, M.D. (2014). Sunshine addiction is a hot topic – but does ‘tanorexia’ really exist? The Conversation. June 20. Located at: https://theconversation.com/sunshine-addiction-is-a-hot-topic-but-does-tanorexia-really-exist-28283
Griffiths, M.D. (2014). Sunshine: As addictive as heroin? Washington Post. June 24. Located at http://www.washingtonpost.com/posteverything/wp/2014/06/24/sunshine-as-addictive-as-heroin/
Heckman, C.J., Cohen-Filipic, J., Darlow, S., Kloss, J.D., Manne, S.L., & Munshi, T. (2014). Psychiatric and addictive symptoms of young adult female indoor tanners. American Journal of Health Promotion, 28(3), 168-174.
Heckman, C.J., Darlow, S., Kloss, J.D., Cohen‐Filipic, J., Manne, S.L., Munshi, T., … & Perlis, C. (2014). Measurement of tanning dependence. Journal of the European Academy of Dermatology and Venereology, 28(9), 1179-1185 .
Heckman, C.J., Egleston, B.L., Wilson, D.B., & Ingersoll, K.S. (2008). A preliminary investigation of the predictors of tanning dependence. American Journal of Health Behavior, 32(5), 451-464.
Kaur, M., Liguori, A., Lang, W., Rapp, S.R., Fleischer, A.B., & Feldman, S.R. (2006). Induction of withdrawal-like symptoms in a small randomized, controlled trial of opioid blockade in frequent tanners. Journal of the American Academy of Dermatology, 54(4), 709-711.
Warthan, M.M., Uchida, T., & Wagner, R.F. (2005). UV light tanning as a type of substance-related disorder. Archives of Dermatology, 141(8), 963-966.




