Addiction–The Hijacked Brain

March 3, 2009 by  
Filed under Addiction

addicted brain2 Addiction  The Hijacked Brain

Electrochemical messages are passed between brain cells. Similar signals are passed to every cell in the body. Each is studded with “receptor sites,” a kind of “mail box” for these electrochemical messengers.

Addiction is a brain disease. Drug abuse is preventable behavior. Drug addiction is a treatable disease.  So many people think that it's a lack of willpower. But, it's not.  Addiction is a chronic, pervasive, progressive brain disease that worsens over time, devastating millions of families worldwide.

Some people are genetically more at risk than others. If you have a sibling, aunt, uncle, grandparent who is addicted (to anything) , then you're at higher risk of become an addict yourself. You're vulnerable to addiction. That doesn't mean that you're doomed.

It's all about dopamine

Dopamine is released in the brain in response to, and in anticipation of, a reward—be it alcohol, drugs, cigarettes, sex, food, or a shopping spree, to name a few rewards.  The reward center in the middle of the brain becomes overactive with usage of a substance or activity that stimulates that area.

The substance wreaks havoc with brain chemistry and structure, which can clearly be seen on brain scans. Over time with continued usage, the chronic flooding of dopamine results in the depletion and deregulation of dopamine as well as other neurotransmitters involved in stress and reward. Consequently, by the time an addiction is established, the drug brings little pleasure and only helps the user to feel temporarily ‘normal'.

The "Go System"

Deep in the brain, we all have a reward system, a pleasure center that evolved to help us to pursue rewards. This was necessary for our survival millions of years ago. When the reward system in the middle of the brain becomes active, it's as if it says, "Go! Go! Go!" Go for the drug! Go for that extra dessert! Go for the excessive alcohol! Go looking for porn on the internet! Go! Go! Go!

The "Stop System"

Another part of the brain, the prefrontal cortex or higher brain, evolved over time to help us to weigh the consequences of our decisions. It helps us to put a lid on impulsive behavior. It says, "Stop!"

The signals to the prefrontal cortex, however, tend to be a bit slower. So, we need to stop and think things out before forging ahead with an impulsive decision. To make things even more frustrating for parents, the brain isn't finished growing until we're about twenty-five or thirty years old. So we tend to have an undeveloped stop system before those ages.

The stop system in our brain says, "This is not smart to drive so fast, eat so much, or yell at a stranger." So, why doesn't it work so well with substance abuse?

The "Hijack"

Putting it in the simplest terms, the "go system" hijacks the "stop system" in the course of this brain disease called addiction. This is why addicts often lose everything before life smacks them in the face hard enough to get their attention that there is a problem--a BIG problem that they have been in denial about for quite some time.

The Twelve Steps of Alcoholics Anonymous begins with admitting powerlessness. From my point of view, the hijacked brain contributes to powerlessness. When addicts/alcoholics say that they can control their usage despite evidence to the contrary (that friends and family can clearly see), they are not understanding the first step.

Sobriety

In order to get better, the addict needs several things. One of them is a period of sobriety in which they are not activating the reward system of the brain through ANY addictive substances or behaviors. Since dopamine and other neurotransmitters have been affected, most addicts that I've seen over the years need another chemical source of help--antidepressants--in order to feel good enough to make it through that critical first year of sobriety.

Sobering Thoughts

I recently attended a substance abuse conference in which Dr. Michael Dennis, senior research psychologist and director of Chestnut Health Systems in Bloomington IL, spoke about the realities of drug dependency. Dr. Dennis was the coordinating center principal investigator of the largest adolescent treatment experiment to date in the United States, the Cannabis Youth Treatment (CYT) study. He has many more very impressive credentials. Some of the sobering thoughts that he said include:

  • The younger a person is when they begin using drugs, the longer the person uses drugs in their lifetime. Early use is highly correlated with dependency.
  • On average, most substance abusing teenagers are in treatment for two months. This is not enough for the vast majority of teens who are classified as having a substance abuse or substance dependent disorder.
  • The average adult substance abuser takes three or four treatment episodes over a period of nine years to achieve one consecutive year of sobriety.

Knowing that, parents of teenagers ought to get a thorough drug and alcohol evaluation (including a SASSI-A2 assessment) with a licensed substance abuse specialist and FOLLOW the treatment recommendations made by that specialist. So much heartache could be avoided if parents would take the recommendations seriously.

Exercise

January 15, 2009 by  
Filed under Daily Habits

Our bodies don't work well if we don't move. There's plenty of research on the benefits of exercise--particularly to lift one's mood. Although all types of exercise can help, the type of exercise that is recommended to treat mood disorders is vigorous aerobic exercise. And it only takes about 20 minutes before serotonin and dopamine, the "feel-good" hormones, kick in and help you feel happy and calm. Since you'll also look better if you exercise, your confidence and self-esteem will improve. Whoo hoo!

Examples of aerobic exercise include dancing, brisk walking, cross-country skiing, jogging, and cycling. There are many machines that simulate the movements of running, walking, rowing, skiing, and stair climbing. Before you spend hundreds (or thousands) of dollars, go to a gym for a while and see what you enjoy. And there's nothing quite like walking outside.

Many of my clients use the same excuse that I have used: I don't want to walk outside in bad weather. To quote my friend Kristen, "There's no such thing as bad weather. There's only bad clothing." Point taken.

You'll still get the benefit of a serotonin release if you do something less vigorous like strolling, stretching, yoga, Tai Chi, ballroom dancing and gentle weight lifting. Do something that you enjoy!

The medical benefits of exercise are numerous. You'll lower your cholesterol, prevent certain cancers as well as chronic diseases such as osteoporosis,  high blood pressure, type 2 diabetes, and obesity. You'll be able to handle the stress in your life more easily. It puts the spark back in your sex life. Your heart and lungs will become more efficient, and you'll have more energy and endurance. You'll probably sleep more soundly and wake up more refreshed. Convinced? Wait, there's more...

If you've ever struggled with depression or anxiety, you'll find that exercise works better than any antidepressant. Naturally, you should always consult with your doctor. However, many of my clients have been able to gradually reduce their antidepressant usage by following a vigorous, regular exercise routine as well as eating healthy foods. They find that exercising a minimum of an hour a day helps their mood.

Not only does exercise add years to your life, new evidence tells us that it can reverse the aging of the brain. Professor Art Kramer of the University of Illinois, a top cognitive neuroscientist, argues that a large body of evidence shows the benefit of aerobic exercise and physical activity on the aging brain. Any exercise which leaves you breathless can increase both the volume of brain tissue and the brain's ability to perform executive functions, such as task coordination, planning, goal maintenance, memory, and the ability to switch tasks.