NorthShore ADHD and Addiction Clinic

Welcome to the NorthShore


With the world being upside down, we have decided to re-open our clinic , virtually. It seems to be working out all right. 

We are happy to refill prescriptions, but we need to have a visit in order to do that. Please note, we can no longer respond to faxes. It's just too cumbersome as we have two locations. Please have your pharmacist call us at 604-803-8513 for a verbal. As before, we're happy to send out charts, you can order those on this website... and your family doctor can still reach us at We look forward to seeing you soon,


Sincerely,  NorthShore ADHD and Addiction Clinic                                                                     You can reach us at

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To whom it may concern,

The impact that NorthShore ADHD Clinic has had on my life is.. inexpressible. When I came to see Dr. Ocana it felt like there were so many moving pieces I didn't have the tools to communicate my needs. Anyways, he just cut right through all the static. It changed everything and set me on the path to --not just actualizing my potential-- but finding contentment within myself (I can't overstate the difference it makes to a confused kid, just having somebody on your side; someone to speak for you, when you aren’t able to speak for yourself)


It was a real turning point in my life.. He made a difference. Sorry if it's a little cheesy, I just don't think I've ever properly thanked him. 



The Overlapping Genetics of ADHD and Addiction

ADHD is the most common neuro-developmental disorder in children. It is more heritable than hair or eye colour and more common than anxiety and bipolar combined. At least 50% of those kids grow up to be adults with ADHD.

People who have ADHD are more likely to drop out of school, become parents in their teens, have their electricity cut off, get fired, go bankrupt, fail in relationships and get injured in car accidents.  But the greatest injury of all, is the steady decline in self esteem that accompanies repeated failure, despite their  best effort. 

ADHD is not a religion that you have to "believe" in. A physician saying they don't believe in ADHD is like a cardiologist saying they don't believe in diabetes.

The Overlapping Neurobiology of ADHD and Addiction

Decreased perfusion in the pre-frontal cortex

Addiction, like ADHD is marked by decreased dopamine neurotransmission in the circuits that govern cognition, executive function, motor control, impulsivity and reward.


People with severe addictions, have both lower dopamine voltage at baseline and dopamine levels fluctuate more compared to people without addiction challenges.

In other words, people with severe addiction, feel worse all day. Then when they use substances, dopamine does not just rise and fall gently, it spikes and crashes. It is this instability in dopamine transmission that remains, even in recovery.


When your dopamine crashes, it feels really bad. Since mother nature designed us to correlate survival promoting behaviors like sex, socializing and eating with increases in dopamine hitting the pleasure centers of the brain, having dopamine hit the ground, feels literally, like you are dying. If you've ever seen someone in full detox, you'll know what I mean. That is why people with substance addictions often trade their substance of choice for another substance or an addictive behavior like smoking or eating. 

ADHD, like Addiction, manifests as impulsive behavior. People. with severe addictions may also have ADHD. In the residential facilities addiction facilities where I have worked, I have found that more than 50% of those inpatients also meet strict criteria for ADHD. If you look at people with methamphetamine addiction, that number goes up to 75%. That is astonishing.  

Therefore, if a person with addiction also has ADHD, not only will they suffer from craving and compulsive drug seeking, but they also show symptoms of poor concentration, disorganization, impulsivity and hyperactivity. Of note, these will persist even in recovery. It's not persistent post-withdrawal syndrome. It's co-morbid, untreated ADHD.

Addiction and Compulsive Behavior


Addiction to substances like cocaine and heroin, are governed by the same neurobiology as compulsive gambling, gaming, shopping, sex, status and risk taking. Behind all these, is the quest for dopamine.

The feelings and emotions associated with dopamine became, through natural selection, the signal that a behavior was associated with survival. 


That's why people with the  most severe addictions would do anything, even kill themselves for dopamine.

Therefore you can't treat ADHD or Addiction or Compulsive behaviours until you stabilize their circuits, helping craving and withdrawal recede, and allowing them to better regulate their emotions and themselves.


That is why treating people to regulate themselves works. Whether it's meditation therapy, hugs, group support or medication. Whatever it takes.

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