Category — Adhd: Drug Abuse

It’s suspected that nearly 25% of all cases identified as attention deficit hyperactivity disorder (ADHD) are not really ADHD at all, but are symptoms related to sleep disorders.

One of the leaders in this research is University of Michigan professor Ronald Chervin.  Chervin theorizes that very important brain development is done during sleep. Among other things, this includes the ability to regulate emotion and processing. So, if a child has chronic sleep problems, brain development may be impaired. Chervin also suspects that the brain does not receive enough oxygen if the child snores which further inhibits development.  According to Chervin’s research, children who snore are more likely to have ADHD.

He likens the ADHD-sleep connection to a child who doesn’t get a nap; he becomes restless, irritable, and acts out.

Chervin developed his theory based on a sleep/behavior survey of the parents of 866 children.  Chervin’s data exposed a sleep disorder -behavior relationship.  It was only logical to conclude that if the sleep disorder could be corrected, the ADHD symptoms would be extinguished. 

According to Newsweek: “To test this theory, Chervin then studied 79 kids (5 to13 years old) who were about to have an adenotonsillectomy. Prior to the surgery, 22 of the 79 were categorized as having ADHD, based on standard measures for such a diagnosis. One year later,  Chervin’s team tracked down the kids for a follow-up. Of the 22 identified as having ADHD, 11 kids no longer qualified as having the disorder.”

Two problems lingered: 1) New cases of ADHD cropped up and 2) 50% of the surgical patients received no benefit at all.

Before you go and get your child’s tonsils and adenoids out, let’s discuss the distinct problems in the logic associated with this research.

First, we have a problem of antecedence; does ADHD exist because of sleep problems? or does the sleep problem exist because of  ADHD? That relationship cannot be clearly identified and is a confounding problem.

Secondly, new cases of ADHD appeared and others did not benefit at all from the surgery. This would lead one to think that the outcomes may not be related at all to the procedure.

I’m reminded of an old story about researchers who taught a frog to jump upon saying, “Jump!” Many weeks were spent training the frog.  The researchers were quite happy that they had proved the frog could hear and could respond to the human voice. One of the researchers  decided they should amputate the frogs hind legs. After carefully surgically removing the frog’s legs and rehabilitating the poor frog, the researchers stood in front of the frog and yelled, “Jump!” When the frog did not respond, they all heartily nodded in agreement that the frog’s hearing was severely impaired by the removal of his hind legs.

There is little doubt that sleep problems affect brain development. Past studies have demonstrated that preschoolers with a sleep disorder are twice as prone to substance abuse by early adolescence and more likely to suffer from anxiety in their 20s. Even the American Academy of Pediatrics concurs that sleep problems are not benign.

However, before we undertake invasive, painful surgery as an option, far more research should be performed to absolutely indicate a direct correlation. One currently does not exist and other options should be explored.

It has become obvious that adequate, restful, uninterrupted sleep is essential to our personal well being. Abnormal sleep patterns may result in behaviors that can be easily confused with ADHD.

If your child has a sleep problem, taking them to a sleep specialist may help. Getting adequate exercise, providing a consistent sleep routine/schedule, reducing stress,  and eating a proper diet may also assist in getting better sleep and better behavior. 

  The Journal of the American Medical Association (JAMA. 2009;302(10):1084-1091) recently published work by Dr. Nora D. Volkow, MD, et al regarding evaluation of the biological bases that may reveal a reward/motivational deficit present in the brains of persons with ADHD.

Volkow and her colleagues theorized that ADHD may be connected to reward-motivation deficits. Volkow investigated whether lack of motivation and its relationship to reward could be traced to depression of dopamine in various areas of the brain.

To determine whether dopamine was depressed in ADHD persons, the researchers used positron emission tomography (PET scans) to measure dopamine levels in 53 nonmedicated ADHD adults and 44 healthy non ADHD adults between 2001-2009.

Since the biological mechanisms of ADHD are unknown, studies of this type have become the holy grails of research. While Volkow’s credentials are quite impressive (NIH, NIDA, etc.) this research is not new or conclusive. The theory that dopamine dysfunction/depression may be involved with ADHD symptoms has been researched for many years.

Furthermore, Volkow’s  small sample size consisted only of adults and therefore should not be extrapolated to include the child population. The small sample size alone should prevent it from being generalized to the entire adult ADHD population. One has a problem of antecedence here; is ADHD caused by dopamine depression in the brain? Or is the dopamine depression the result of ADHD that was acquired by other biological means? This research cannot answer that question.

What does the research tell us? It tells us that for some adults, dopamine may play a role in ADHD. For those adults, taking a stimulant medication may increase dopaminergic activity thus increasing reward/motivation responses and thus increasing attention to task. That might be a stretch.

On the downside, persons with depressed dopamine levels would probably greatly enjoy using stimulants. Study participants reported this. This may contribute to the frequent incidences of substance abuse among ADHD persons.

The authors write,"Despite decades of research, the specific neurobiological mechanisms underlying this disorder still remain unclear. Genetic, clinical and imaging studies point to a disruption of the brain dopamine system, which is corroborated by the clinical effectiveness of stimulant drugs (methylphenidate hydrochloride and amphetamine), which increase extracellular dopamine in the brain."

Unfortunately, the study leaves us with more questions than answers. Does it tell us what happens long term? Does it tell us of side effects?  Does it tell us if this actually applies to children? Can we conclusively determine a causal relationship between reward/motivation and ADHD? Does it solve the problem of antecedence? Do we know anything conclusively about all ADHD adults. No. There’s still a long road ahead.

A study published in the journal Pediatrics reports that teenage abuse of drugs prescribed for ADHD increased 76 percent from 1998 to 2005. The study was based on calls to poison control centers across the nation. Effects from this abuse can be agitation, rapid heart beat, and dangerously blood pressure.

Many teens and college age students know that taking ADHD medication results in the same effect for persons who do not have attention problems. Low dose stimulant medication increases focus and one’s ability to stay attentive to boring tasks. It has become the drug of choice for studying for exams.

The Denver Post (www.denverpost.com) reports that Boulder police arrested three teens on felony charges of distribution and possession of a schedule II controlled substance. The incidence occurred on April 4 at Nevin Platt Middle School where the youth attended school.

Apparently one student had the drugs, gave one to another student who swallowed it and was taken ill. The sick student was then taken to the hospital and released. Other students were involved in the safekeeping of the drugs after they were brought to school.

The student that brought the drugs (Strattera and Concerta for treatment of ADHD) attempted to trade the drugs for alcohol.

The Denver Post says,

Two of the students have been charged with distribution and possession of a schedule II controlled substance and unlawful acts while the third was charged with possession of a controlled substance and unlawful act. Possession and distribution of a schedule II controlled substance is a felony, officials said.

While these students were apprehended, the incidence of ADHD drug sales and use is quite common among students at middle school, high school, and university.

The New York Times (www.nytimes.com) reported in 2005 in an article called The Adderall Advantage that:

At many colleges across the country, the ingredients for academic success now include a steady flow of analeptics, the class of prescription amphetamines that is used to treat attention deficit hyperactivity disorder [ADHD].

Since Ritalin abuse first hit the radar screen several years ago, the reliance on prescription stimulants to enhance performance has risen, becoming almost as commonplace as No-Doz, Red Bull and maybe even caffeine. As many as 20 percent of college students have used Ritalin or Adderall to study, write papers and take exams, according to recent surveys focused on individual campuses. A study released this month by the National Center on Addiction and Substance Abuse at Columbia found that the number of teenagers who admit to abusing prescription medications tripled from 1992 to 2003, while in the general population such abuse had doubled.

Dr. Robert A. Winfield, director of University Health Service at the University of Michigan, Ann Arbor, sees a growing number of students who falsely claim to be A.D.H.D. so they can get a prescription. At least once a week, a jittery, frightened, sleep-deprived student who has taken too many tablets for too many days shows up at his office. “Things have really gotten out of hand in the last four to five years,” he said. “Students have become convinced that this will help them achieve academic success.”

On campus, the drugs are either sold or given away by people with prescriptions, or they are procured by students who have learned to navigate the psychiatric exams offered by campus health centers, which usually provide the drugs at a discount. Unlike Ritalin, two newer members of the family of analeptics – Adderall and Concerta – come in time-release forms and can keep a patient medicated an entire day.

Louisiana State’s The Daily Reveille (www. media.www.lsureveille.com) reported that a survey documented in the journal Nature cites that one in five students used Adderall & Ritalin for a study booster.

Final exams traditionally have students studying long hours to cram for their final exams. But some students are now using a quick-fix for brain retention.

One in five respondents of adult professionals said they have used drugs to enhance brain power, according to a January survey in Nature journal. The online survey polled 1,400 people in 60 countries.

Ritalin and Adderall were the two drugs participants said they took.

Ritalin and Adderall are commonly used to treat attention-deficit hyperactivity disorder. They are also used to treat symptoms of narcolepsy and chronic fatigue syndrome. The stimulants are supposed to reduce impulsive behavior and facilitate concentration.

But people diagnosed with ADHD are not the only ones who can benefit from the drugs.

“It does work [for anyone]. We know that from lab studies,” said Martha Farah, director of the Center for Cognitive Neuroscience at the University of Pennsylvania, according to CNN.com

This is an international phenomenon. The reason is that low-dose stimulant medication is not a targeted approach to fixing ADHD. Instead, low-dose stimulant medication works the same for non-ADHD students. Here’s an example: if we have 50 ADHD students and 50 high functioning non-ADHD students, give them both a boring task, the both will perform better on that task.

Students know this and it helps the cram for exams. Will it help to prosecute all these students under felony charges? Not likely.

Two new studies confirm that ADHD children are more at-risk for alcohol and substance abuse as they grow older. Parental alcoholism and stressful family environments are additional risks. Results of the two studies were published in Alcoholism: Clinical & Experimental Research [April 2007].

• Attention-Deficit Hyperactivity Disorder Moderates the Life Stress Pathway to Alcohol Problems in Children of Alcoholics

• Attention-Deficit/Hyperactivity Disorder Risk for Heavy Drinking and Alcohol Use Disorder Is Age Specific

Brooke Molina, associate professor of psychiatry and psychology at the University of Pittsburgh, and co-author for both studies says that, “Children with ADHD are believed to be at risk for alcoholism because of their impulsivity and distractibility, as well as other problems that often accompany ADHD such as school failure and behavior problems.”

To determine alcohol use, Molina interviewed 364 participants in the larger Pittsburgh ADHD Longitudinal Study and compared it with demographically age matched adolescents and adults as a comparison. “We found that the children with ADHD were more likely than the comparison group to drink heavily and to have enough problems related to their drinking that they were diagnosed with alcohol abuse or dependence,” said Molina. “This means that their drinking caused problems such as fights with their parents or friends, a drop in their grades at school, or difficulty with controlling the amount of alcohol that they drank.”

Drinking problems began around age 15, said Molina. “The 15-to-17-year olds with childhood ADHD reported being drunk an average of 14 times in the previous year, versus only 1.8 times for 15-to-17-year olds in the study who did not have childhood ADHD. Whereas 14 percent of the 15-to-17-year olds with childhood ADHD were diagnosed with alcohol abuse or dependence, none of the 15-to-17-year olds without childhood ADHD were.”

The study indicates that the ADHD-alcohol connection seems to begin in adolescence when children have greater access to alcohol and other substances.

“For example, 42 percent of those children with ADHD who also had serious, persistent behavior problems [later] had alcohol abuse or dependence by the age of 18 to 25,” said Molina.

Molina indicates that little is known about alcohol dependence beyond this age range for ADHD persons. “Most young adults drink less after they settle into jobs and family life,” she said. “We will be following the young adults in the Pittsburgh study to see if this happens or not.”

Molina’s research also indicated that parental alcoholism predicted heavy problem drinking among teenagers in her study. The ADHD/family link may cause increased family stress beginning in early childhood due to lack of parental coping skills and behavioral conflicts. The parent may begin drinking in response to the increased family stress. No genetic proclivity is identified by this study, however, this seems like an essential next step. The study reflects an issue that affects families whether they have and ADHD member or not: if a parent suffers from alcoholism, the child will have an increased risk as well. What is interesting about the research is the fact that stressors like ADHD may drive some parents to drink as a coping mechanism. This, in turn, may begin a similar cycle for the ADHD child.

Bottom line, Molina says, “We need to put these findings in perspective; it is important to recognize that not all children with ADHD will have problems with alcohol.”