"Ecstasy" is a common recreational drug. Chemically, it is known as MDMA, or 3,4-methylenedioxymethamphetamine. It is a type of chemically modified amphetamine compound which causes a release of serotonin and other transmitters from brain cells. It probably has a variety of other pharmacological effects.
MDMA has been shown in many studies to be neurotoxic, particularly causing harm to the cells in the brain which produce serotonin. There is evidence that MDMA can cause permanent harm or cell death. These studies have been done using rodents, monkeys, and using laboratory cell cultures. The neurotoxicity seems to be associated with, or magnified by, the increase in body temperature caused by ecstasy ingestion. Here are a few of the many references about this:
http://www.ncbi.nlm.nih.gov/pubmed/1379014
http://www.ncbi.nlm.nih.gov/pubmed/18991870
http://www.ncbi.nlm.nih.gov/pubmed/16884865
http://www.ncbi.nlm.nih.gov/pubmed/12464456
But here is a paper describing long-term MDMA exposure in monkeys, which did not lead to chemical evidence of neurotoxicity:
http://www.ncbi.nlm.nih.gov/pubmed/15039771
An important body of research is the Netherlands XTC Toxicity (NeXT) study. This 2008 paper from the NeXT study describes a prospective follow-up of new low-dose ecstasy users, and found evidence through functional brain imaging of neurotoxicity in the ecstasy-using group:
http://www.ncbi.nlm.nih.gov/pubmed/18842607
Here is another similar 2007 paper published in Archives of General Psychiatry describing a slight reduction in verbal memory performance in individuals who had used even just a few doses of ecstasy, compared to individuals who had not used any:
http://www.ncbi.nlm.nih.gov/pubmed/17548754
However, this paper gave rise to a good debate in subsequent issues of this journal. Basically, neither group in the study declined in memory performance, it's just that the non-ecstasy group improved more than the ecstasy group on re-testing. The ecstasy group included some people who had used much more than others. Also, the ecstasy-using group may have been more anxious about negative memory effects, since they had been warned about this possibility in advance. Such anxiety can impare test performance. The ecstasy-using group may have taken drugs tainted with impurities. A very important point I would add is that most people who use ecstasy recreationally do so in a chaotic, loud environment such as a rave--the drug may act as an emotional or interpersonal "amplifier", which in the case of a rave, could give rise to an amplification of social chaos. Also such an environment might lead to a higher degree of hyperthermia, which is associated with worse neurotoxicity. Use of ecstasy in a controlled, gentle, intimate environment might be much safer.
Here's a reference to a 2009 British Journal of Psychiatry study showing no difference in serotonin transporter binding between groups of former MDMA users, other drug users, and controls with no history of street drug use:
http://www.ncbi.nlm.nih.gov/pubmed/19336788?ordinalpos=1&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum
This is a randomized, double-blind study looking at physical and emotional effects of acute MDMA ingestion, at low (1 mg/kg) and high (1.6 mg/kg) doses. It did not demonstrate hyperthermia as an effect of the drug, rather it implies that hyperthermia is caused by the environmental situation in conjunction with the drug (e.g. vigorous activity dancing indoors in a crowd).
http://www.ncbi.nlm.nih.gov/pubmed/18626271
There may be therapeutic applications for MDMA. The subjective effects of the drug can be to dramatically increase a feeling of openness, empathy or connectedness with other people, both on an emotional level and also sensually or physically.
Here are some references about this:
http://www.ncbi.nlm.nih.gov/pubmed/19273493
{this is a brief 2009 review of the subject of possible psychotherapeutic uses of MDMA, such as in anxiety disorders and PTSD}
http://www.ncbi.nlm.nih.gov/pubmed/19004414
{this 2008 study from Madrid showed that 50-75 mg doses of MDMA used in conjunction with psychotherapy for PTSD appeared to be physiologically and emotionally safe for 6 subjects. The study apparently had to be ended due to political pressures, before more subjects could be treated. Clearly, this is a controversial issue}
A psychiatrist by the name of Michael Mithoefer is trying to do research about using MDMA for treating PTSD. Here are some related sites:
http://scienceblogs.com/neurophilosophy/2007/11/mdma_for_ptsd.php
http://www.maps.org/mdma/protocol/
http://www.maps.org/mdma/
I think it is important to be open-minded about things outside the mainstream, and to recognize that mainstream research may sometimes dismiss ideas considered too controversial. Yet I recognize that the above sites have a biased agenda of their own which may undervalue important risk analyses published in the mainstream literature.
Answering questions relating to controversial issues, such as the potential use of MDMA as a therapeutic agent, requires a very neutral, unbiased research environment.
Aside from therapeutic possibilities in PTSD, it seems to me that MDMA might be worth investigating as an adjunct for couples' therapy, particularly for couples who feel inhibited or disconnected with each other. MDMA can foster a sense of connectedness, sensuality, and empathy. These three domains are often major weaknesses in troubled relationships. Apparently MDMA has been used in relationship therapy in the past, but the results have been poorly documented.
I have seen patients for whom MDMA use appears to have been part of a destructive long-term drug abuse pattern, which has most likely exacerbated mood, anxiety, and interpersonal problems. I have also seen a few patients for whom isolated experiences with MDMA have led to strong, memorable experiences of openness and intimacy with friends or partners.
In conclusion, I emphasize that MDMA is clearly a dangerous drug. It is most definitely neurotoxic. The risk of neurotoxicity is most likely higher with frequent, regular, or long-term use. Most "ecstasy" obtained on the street is tainted with numerous impurities--both deliberately, to reduce production costs, and as by-products of crude synthetic techniques; the impurities are likely to add to potential toxicity. I think that the setting in which MDMA is used most frequently (e.g. as a "dance drug") is likely to magnify its toxicity, in that hyperthermia is more likely, and any intimate emotional benefit is less likely. Many MDMA users are taking this drug frequently, over a period of years--I think this pattern has a very high risk of causing permanent neuropsychiatric harm.
We do not know yet if MDMA could have a positive therapeutic role for some people, but if it did, it would most likely have to be used only a very small number of times, in a carefully controlled, socially supported, comfortable, quiet, cool setting, by individuals who are already in a state of relative emotional calm. I suspect that a history of psychotic or bipolar illness, or a history of other street drug use or dependence, would greatly magnify the psychiatric risks of MDMA use. In the meantime, the existing research shows that any possible benefits would have to be weighed against very substantial risks. It remains an illegal drug in most jurisdictions.
Tuesday, May 26, 2009
Thursday, May 21, 2009
Eating Disorders
Disordered eating is a complex problem which takes a variety of forms.
Anorexia nervosa is characterized by restrictive eating behaviours and excessive exercise which lead to medically dangerous weight loss.
Bulimia nervosa is characterized by binge-eating, and by purging (most commonly, self-induced vomiting). During binges, people often feel out of control, unable to stop.
In many cases, individuals have a mixture of anorexic and bulimic symptoms, without having a full syndrome of anorexia or bulimia.
In most cases of any eating disorder, there is a prominent disturbance of body image. Individuals may feel disgusted with their physical appearance. There may be an extremely strong preoccupation with fat. Fat (the word itself, as well as everything it represents) becomes something to be feared, avoided, and reviled. Any perception of normal subcutaneous fat is met with self-criticism or loathing. A perception of becoming thinner can be met with a feeling of satisfaction or addictive euphoria. Dietary fat, and dietary calories, often become subjects of intense preoccupation. Planning meals, or thinking about past meals, can lead to a great deal of anxiety. Eating socially with others can be extremely difficult. Situations in which people are more physically exposed (e.g. swimming pools, or the outdoors on a hot summer day) can cause increased self-consciousness and consequent self-loathing. Therefore, these situations are often avoided. Physical comparisons with other people can intensify symptoms. Many eating disorder behaviours (such as binges and purges) occur in secret.
Eating disorders can be medically dangerous: severe anorexia nervosa can be fatal. Other metabolic abnormalities from starvation or purging can cause weakness, cognitive impairments, bone demineralization, and abnormal heart rhythms. Repeated vomiting can cause damage to the esophagus. Overall poor nutrition makes it hard to treat other mental health problems, such as anxiety or depression.
In the treatment of eating disorders, sometimes a hospital stay is needed if weight is dangerously low.
Effective long-term resolution of severe symptoms can begin with an intensive multi-disciplinary day program, and may require lifelong treatment.
But here are a few basic ideas that I think can help in a less intensive outpatient setting:
1) It is important to be well-educated about basic nutrition -- to know what your body needs in a day, in terms of calories, fat, protein, vitamins, etc -- and to have a good sense of what foods might contain this balance of nutrients in a typical day. A consult with a dietician can be helpful.
2) Regular meals are important. Having regular meals can reduce the tendency to binge, since hunger will not build up as intensely. Experiencing meals is a component of behavioural therapy: planning the meal, obtaining & preparing the food, consuming the food, and then allowing the food to stay inside and be digested without purging. Each of these aspects may carry a lot of anxiety and stress. Having interpersonal support during these times can be powerfully helpful. Cognitive-behavioural techniques could also be helpful to manage the anxiety.
3)It can be important to recognize familiar patterns of thinking (e.g. having to do with fat or caloric calculations, dieting, weight loss plans, etc.) and practicing ways of directing attention away from these themes. It is also unhelpful to be bombarded with these themes in your social or cultural life, so I encourage a practice of redirecting social, cultural, or conversational energy away from subjects such as dieting, weight loss, etc.
4) Antidepressants such as SSRIs can help with bulimia (reference: http://www.ncbi.nlm.nih.gov/pubmed/14583971). The anticonvulsant topiramate can help reduce binge eating (references: http://www.ncbi.nlm.nih.gov/pubmed/18774432; http://www.ncbi.nlm.nih.gov/pubmed/14728106). Pharmacologic treatments for anorexia have not yet been very successful.
5) I think a very important element to work on is the confrontation and challenge of negative body image, its associated language, and its associated impairment in sensuality. Steps may need to be taken to stop or challenge "negative self-talk" and criticism about your body--about the way your body looks in a mirror, or the way your body feels to touch. This negative self-talk, and the ensuing negative emotions, need to be replaced by affirmations and by enjoyment. I think this type of work needs to be done every day. It can sometimes require work to gain pleasure from something, or to learn how to experience pleasure: this is a theme strongly present in the treatment of depression as well. Actually, I think it is a theme present in life generally -- we need to learn and practice something, to be with it consistently, in order for love or enjoyment to grow.
6) Similarly, I think it is important to reclaim the sensuality of food: the process of planning, preparing, consuming, and digesting food needs to be transformed from a source of dread or anxiety to a set of simple life pleasures. I think this type of sensuality should be emphasized in behavioural therapeutic techniques. Mindfulness meditation techniques can be helpful along these lines.
Anorexia nervosa is characterized by restrictive eating behaviours and excessive exercise which lead to medically dangerous weight loss.
Bulimia nervosa is characterized by binge-eating, and by purging (most commonly, self-induced vomiting). During binges, people often feel out of control, unable to stop.
In many cases, individuals have a mixture of anorexic and bulimic symptoms, without having a full syndrome of anorexia or bulimia.
In most cases of any eating disorder, there is a prominent disturbance of body image. Individuals may feel disgusted with their physical appearance. There may be an extremely strong preoccupation with fat. Fat (the word itself, as well as everything it represents) becomes something to be feared, avoided, and reviled. Any perception of normal subcutaneous fat is met with self-criticism or loathing. A perception of becoming thinner can be met with a feeling of satisfaction or addictive euphoria. Dietary fat, and dietary calories, often become subjects of intense preoccupation. Planning meals, or thinking about past meals, can lead to a great deal of anxiety. Eating socially with others can be extremely difficult. Situations in which people are more physically exposed (e.g. swimming pools, or the outdoors on a hot summer day) can cause increased self-consciousness and consequent self-loathing. Therefore, these situations are often avoided. Physical comparisons with other people can intensify symptoms. Many eating disorder behaviours (such as binges and purges) occur in secret.
Eating disorders can be medically dangerous: severe anorexia nervosa can be fatal. Other metabolic abnormalities from starvation or purging can cause weakness, cognitive impairments, bone demineralization, and abnormal heart rhythms. Repeated vomiting can cause damage to the esophagus. Overall poor nutrition makes it hard to treat other mental health problems, such as anxiety or depression.
In the treatment of eating disorders, sometimes a hospital stay is needed if weight is dangerously low.
Effective long-term resolution of severe symptoms can begin with an intensive multi-disciplinary day program, and may require lifelong treatment.
But here are a few basic ideas that I think can help in a less intensive outpatient setting:
1) It is important to be well-educated about basic nutrition -- to know what your body needs in a day, in terms of calories, fat, protein, vitamins, etc -- and to have a good sense of what foods might contain this balance of nutrients in a typical day. A consult with a dietician can be helpful.
2) Regular meals are important. Having regular meals can reduce the tendency to binge, since hunger will not build up as intensely. Experiencing meals is a component of behavioural therapy: planning the meal, obtaining & preparing the food, consuming the food, and then allowing the food to stay inside and be digested without purging. Each of these aspects may carry a lot of anxiety and stress. Having interpersonal support during these times can be powerfully helpful. Cognitive-behavioural techniques could also be helpful to manage the anxiety.
3)It can be important to recognize familiar patterns of thinking (e.g. having to do with fat or caloric calculations, dieting, weight loss plans, etc.) and practicing ways of directing attention away from these themes. It is also unhelpful to be bombarded with these themes in your social or cultural life, so I encourage a practice of redirecting social, cultural, or conversational energy away from subjects such as dieting, weight loss, etc.
4) Antidepressants such as SSRIs can help with bulimia (reference: http://www.ncbi.nlm.nih.gov/pubmed/14583971). The anticonvulsant topiramate can help reduce binge eating (references: http://www.ncbi.nlm.nih.gov/pubmed/18774432; http://www.ncbi.nlm.nih.gov/pubmed/14728106). Pharmacologic treatments for anorexia have not yet been very successful.
5) I think a very important element to work on is the confrontation and challenge of negative body image, its associated language, and its associated impairment in sensuality. Steps may need to be taken to stop or challenge "negative self-talk" and criticism about your body--about the way your body looks in a mirror, or the way your body feels to touch. This negative self-talk, and the ensuing negative emotions, need to be replaced by affirmations and by enjoyment. I think this type of work needs to be done every day. It can sometimes require work to gain pleasure from something, or to learn how to experience pleasure: this is a theme strongly present in the treatment of depression as well. Actually, I think it is a theme present in life generally -- we need to learn and practice something, to be with it consistently, in order for love or enjoyment to grow.
6) Similarly, I think it is important to reclaim the sensuality of food: the process of planning, preparing, consuming, and digesting food needs to be transformed from a source of dread or anxiety to a set of simple life pleasures. I think this type of sensuality should be emphasized in behavioural therapeutic techniques. Mindfulness meditation techniques can be helpful along these lines.
Antidepressants and Bone
There is some evidence that antidepressants, particularly the serotonin reuptake inhibitors, can reduce bone density, and increase the risk of fractures. This risk would be most pertinent in an elderly population.
Serotonin is a relevant factor in bone metabolism, so it is important to consider the potential impact of serotonergic antidepressants on bone health.
Here's a study showing an association between depression and reduced bone mineral density. Depression itself is an understandable cause for bone mineral loss, since it is associated with fatigue, therefore less exercise, worse nutrition, and increased stress hormones such as corticosteroids. In this study, antidepressant use was independently associated with bone mineral density loss in women. It is a retrospective analysis from a large catchment area study involving over 1000 people, who were followed since 1981.
http://www.ncbi.nlm.nih.gov/pubmed/19126857
There are some other studies showing an association between antidepressant use (especially SSRIs) and fractures due to fragile bone. One of the better such studies was published in 2008, looking at the incidence of fractures in a large population-based cohort involving 7983 people aged 55 and over. Importantly, the authors attempted to control for the impact of depression itself on fracture incidence, and basically showed that current SSRI use approximately doubles the risk of fractures:
http://www.ncbi.nlm.nih.gov/pubmed/18626268
There is one important prospective animal study, which shows a small effect of SSRI treatment on bone quality over a 6-month period:
http://www.ncbi.nlm.nih.gov/pubmed/17163489
In conclusion, it is important to know that antidepressants could possibly reduce bone density, and therefore contribute to an increased risk of fractures in the elderly. If antidepressant therapy is needed, it is especially important to encourage activities which protect bone health, such as regular exercise, and good nutrition (including ample calcium and vitamin D in the diet). Non-SSRI antidepressants such as tricyclics may have a smaller effect than the SSRIs. Bone density testing could be indicated, as could medication treatments to protect bone mineralization. These issues should be discussed with your family physician and your psychiatrist.
Serotonin is a relevant factor in bone metabolism, so it is important to consider the potential impact of serotonergic antidepressants on bone health.
Here's a study showing an association between depression and reduced bone mineral density. Depression itself is an understandable cause for bone mineral loss, since it is associated with fatigue, therefore less exercise, worse nutrition, and increased stress hormones such as corticosteroids. In this study, antidepressant use was independently associated with bone mineral density loss in women. It is a retrospective analysis from a large catchment area study involving over 1000 people, who were followed since 1981.
http://www.ncbi.nlm.nih.gov/pubmed/19126857
There are some other studies showing an association between antidepressant use (especially SSRIs) and fractures due to fragile bone. One of the better such studies was published in 2008, looking at the incidence of fractures in a large population-based cohort involving 7983 people aged 55 and over. Importantly, the authors attempted to control for the impact of depression itself on fracture incidence, and basically showed that current SSRI use approximately doubles the risk of fractures:
http://www.ncbi.nlm.nih.gov/pubmed/18626268
There is one important prospective animal study, which shows a small effect of SSRI treatment on bone quality over a 6-month period:
http://www.ncbi.nlm.nih.gov/pubmed/17163489
In conclusion, it is important to know that antidepressants could possibly reduce bone density, and therefore contribute to an increased risk of fractures in the elderly. If antidepressant therapy is needed, it is especially important to encourage activities which protect bone health, such as regular exercise, and good nutrition (including ample calcium and vitamin D in the diet). Non-SSRI antidepressants such as tricyclics may have a smaller effect than the SSRIs. Bone density testing could be indicated, as could medication treatments to protect bone mineralization. These issues should be discussed with your family physician and your psychiatrist.
Thursday, May 7, 2009
Long-term stimulants & ADHD
The long-term use of stimulants such as methylphenidate (Ritalin), dextroamphetamine (Dexedrine), and mixed amphetamine salts (Adderall), in the treatment of attention or behaviour problems in children and adults, has been a controversial issue.
Symptoms of so-called ADHD include inability to sustain attention while doing academic, social, domestic, or work activities; restlessness, and inability to sit quietly or wait patiently. Of course, everyone has difficulties in these domains at times. The diagnosis of ADHD is intended to apply to individuals whose symptoms are so severe in these areas that it causes serious, ongoing problems functioning socially, academically, and with other life tasks. Those with an ADHD diagnosis are much more likely to drop out of school, to be unable to maintain jobs, to have difficulty maintaining friendships, and to have conduct problems ultimately leading to problems with the law, etc.
It is abundantly clear, from careful research, that stimulants improve symptoms of ADHD, and associated problems with social behaviour and disordered conduct.
I do not see good evidence that stimulants adversely affect personality traits or sense of self. Rather, in many cases, the experience of having severe untreated ADHD symptoms adversely affects personality traits and sense of self.
I will add to this post later, to discuss potential adverse effects from stimulant therapy. But stimulants are generally well-tolerated, with a low risk of serious adverse effects for most people.
Existing psychosocial treatments can help ADHD symptoms as well, but they do not work as well as stimulants, and--surprisingly--combining psychosocial treatments with stimulant therapy does not work much better than stimulants alone, except possibly for some individual cases. Here is some evidence, from a 2008 meta-analysis, for this finding:
http://www.ncbi.nlm.nih.gov/pubmed/18068284
Here are a few other important studies pertaining to long-term stimulant use:
This 5 year prospective study shows that stimulant therapy substantially reduces the rate of smoking and substance use disorders in adolescents with ADHD:
http://www.ncbi.nlm.nih.gov/pubmed/18838643
About 20% of ADHD adolescents treated with stimulants over 5 years developed a substance use disorder, compared to 55% of ADHD adolescents not treated with stimulants.
Stimulant-treated adolescents also had much lower rates of smoking. This is a very strong and compelling study, showing profound reductions in addictive disorders as a result of long-term stimulant treatment.
This 2008 study looked at a group of 169 children with ADHD, and followed up on them 9 years later:
http://www.ncbi.nlm.nih.gov/pubmed/18928410
The children who had taken stimulant treatment for their ADHD fared better than those with ADHD who had not taken stimulants, in terms of academic performance (as measured in several different ways). Neither ADHD group performed as well as a comparison group without ADHD.
This 2007 study from the Journal of Developmental and Behavioral Pediatrics is particularly strong, in that it looks at an entire birth cohort (all 5718 children born in Rochester between 1976-1982, of whom 370 with ADHD were identified):
http://www.ncbi.nlm.nih.gov/pubmed/17700079
It looked at long-term outcomes, over an average of 18 years. The study shows reduced absenteeism, reduced likelihood of being held back a grade, and slightly higher reading test scores, for ADHD children receiving long-term stimulant therapy.
Reading scores were particularly higher in the children who had received high doses of stimulants for longer periods of time.
The stimulant group did not differ from the non-stimulant group with respect to sociodemographic variables or duration of follow-up. The study was retrospective and was not randomized, yet it remains a very strong piece of evidence about long-term effects of stimulant treatment for ADHD.
I think these findings emphasize a number of things:
1) stimulants work very well for ADHD symptoms
2) stimulants unfortunately only have a slight effect on long-term academic outcomes
3) existing psychosocial treatments work modestly well on their own, but for most people do not add to the benefits of stimulants. The psychosocial treatments did not improve long-term academic outcomes. The duration of psychosocial treatment did not correlate with better improvement in symptoms, so the weakness of existing psychosocial treatments is not likely due to inadequate length of treatment.
4) long-term stimulant therapy may substantially reduce the risk of ADHD kids getting into alcohol use, substance use, or smoking problems. This finding is strong evidence against the idea that stimulant use increases the risk for subsequent addictive disorders.
I do think we need to keep working on better psychosocial treatments. I suspect that intensive, long-term, individualized treatment, with a style which suits the personality and strengths of each person, will be most effective. And I suspect that such treatments would need to be combined with positive, supportive milieux at home, school, work, and in peer relationships.
I will add to this post, or write a sequel post, to discuss other treatments for ADHD, such as atomoxetine, antidepressants, EEG biofeedback, dietary modification, and some newer psychosocial treatment ideas.
Symptoms of so-called ADHD include inability to sustain attention while doing academic, social, domestic, or work activities; restlessness, and inability to sit quietly or wait patiently. Of course, everyone has difficulties in these domains at times. The diagnosis of ADHD is intended to apply to individuals whose symptoms are so severe in these areas that it causes serious, ongoing problems functioning socially, academically, and with other life tasks. Those with an ADHD diagnosis are much more likely to drop out of school, to be unable to maintain jobs, to have difficulty maintaining friendships, and to have conduct problems ultimately leading to problems with the law, etc.
It is abundantly clear, from careful research, that stimulants improve symptoms of ADHD, and associated problems with social behaviour and disordered conduct.
I do not see good evidence that stimulants adversely affect personality traits or sense of self. Rather, in many cases, the experience of having severe untreated ADHD symptoms adversely affects personality traits and sense of self.
I will add to this post later, to discuss potential adverse effects from stimulant therapy. But stimulants are generally well-tolerated, with a low risk of serious adverse effects for most people.
Existing psychosocial treatments can help ADHD symptoms as well, but they do not work as well as stimulants, and--surprisingly--combining psychosocial treatments with stimulant therapy does not work much better than stimulants alone, except possibly for some individual cases. Here is some evidence, from a 2008 meta-analysis, for this finding:
http://www.ncbi.nlm.nih.gov/pubmed/18068284
Here are a few other important studies pertaining to long-term stimulant use:
This 5 year prospective study shows that stimulant therapy substantially reduces the rate of smoking and substance use disorders in adolescents with ADHD:
http://www.ncbi.nlm.nih.gov/pubmed/18838643
About 20% of ADHD adolescents treated with stimulants over 5 years developed a substance use disorder, compared to 55% of ADHD adolescents not treated with stimulants.
Stimulant-treated adolescents also had much lower rates of smoking. This is a very strong and compelling study, showing profound reductions in addictive disorders as a result of long-term stimulant treatment.
This 2008 study looked at a group of 169 children with ADHD, and followed up on them 9 years later:
http://www.ncbi.nlm.nih.gov/pubmed/18928410
The children who had taken stimulant treatment for their ADHD fared better than those with ADHD who had not taken stimulants, in terms of academic performance (as measured in several different ways). Neither ADHD group performed as well as a comparison group without ADHD.
This 2007 study from the Journal of Developmental and Behavioral Pediatrics is particularly strong, in that it looks at an entire birth cohort (all 5718 children born in Rochester between 1976-1982, of whom 370 with ADHD were identified):
http://www.ncbi.nlm.nih.gov/pubmed/17700079
It looked at long-term outcomes, over an average of 18 years. The study shows reduced absenteeism, reduced likelihood of being held back a grade, and slightly higher reading test scores, for ADHD children receiving long-term stimulant therapy.
Reading scores were particularly higher in the children who had received high doses of stimulants for longer periods of time.
The stimulant group did not differ from the non-stimulant group with respect to sociodemographic variables or duration of follow-up. The study was retrospective and was not randomized, yet it remains a very strong piece of evidence about long-term effects of stimulant treatment for ADHD.
I think these findings emphasize a number of things:
1) stimulants work very well for ADHD symptoms
2) stimulants unfortunately only have a slight effect on long-term academic outcomes
3) existing psychosocial treatments work modestly well on their own, but for most people do not add to the benefits of stimulants. The psychosocial treatments did not improve long-term academic outcomes. The duration of psychosocial treatment did not correlate with better improvement in symptoms, so the weakness of existing psychosocial treatments is not likely due to inadequate length of treatment.
4) long-term stimulant therapy may substantially reduce the risk of ADHD kids getting into alcohol use, substance use, or smoking problems. This finding is strong evidence against the idea that stimulant use increases the risk for subsequent addictive disorders.
I do think we need to keep working on better psychosocial treatments. I suspect that intensive, long-term, individualized treatment, with a style which suits the personality and strengths of each person, will be most effective. And I suspect that such treatments would need to be combined with positive, supportive milieux at home, school, work, and in peer relationships.
I will add to this post, or write a sequel post, to discuss other treatments for ADHD, such as atomoxetine, antidepressants, EEG biofeedback, dietary modification, and some newer psychosocial treatment ideas.
Monday, May 4, 2009
Direct personal requests for help
I encourage all of you who might be searching for help, waiting for help, or struggling with existing help, to be patient, to be brave, to hold onto hope.
At times I have had some direct personal requests for help from individuals who are not currently my patients. I feel that I have to stick to a policy of not being able to respond directly to such requests, as I feel that a direct response would, for me, cause me to feel a professional duty to maintain ongoing care.
But, once again, I do encourage all those who are struggling to hold on, to be patient, to be brave, to be open-minded about your options for new things to try, to hold onto hope.
For those in the Vancouver area, I remind you of some of the local resources:
http://garthkroeker.blogspot.com/2008/12/finding-help.html
If local resources are failing to keep you afloat, please keep an open mind about using emergency services, such as the local hospital emergency rooms.
At times I have had some direct personal requests for help from individuals who are not currently my patients. I feel that I have to stick to a policy of not being able to respond directly to such requests, as I feel that a direct response would, for me, cause me to feel a professional duty to maintain ongoing care.
But, once again, I do encourage all those who are struggling to hold on, to be patient, to be brave, to be open-minded about your options for new things to try, to hold onto hope.
For those in the Vancouver area, I remind you of some of the local resources:
http://garthkroeker.blogspot.com/2008/12/finding-help.html
If local resources are failing to keep you afloat, please keep an open mind about using emergency services, such as the local hospital emergency rooms.
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