r/videos May 30 '17

This guy's presentation on ADHD is excellent

https://m.youtube.com/watch?v=JowPOqRmxNs
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u/[deleted] May 30 '17

Worth pointing out that ADHD is not the name of a disease. It's simply the name we've given to the people whose behavior meets the diagnostic criteria. We still know very little about the cause of the behavior, but we know it's both genetic and environmental.

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u/HD_ERR0R May 30 '17 edited May 30 '17

Based on Dr. Russell environment alone can't cause ADHD. But can play a factor in making symptoms worse or triggering 1 or more of 5 genes.

10 min causation of ADHD part 1

4min causation of ADHD part 2

4min causation of ADHD part 3

Full lecture

same video broken up into parts to be more ADHD friendly

Edit: reworded.

This part of ADHD is still not fully known yet.

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u/[deleted] May 30 '17 edited May 30 '17

Edit: I agree with your new comment :).


I'm a clinical psychologist, and the information you're providing is just not true. There are a ton of peer-reviewed studies that show there is a higher chance of being diagnosed with ADHD when there is child abuse, marital conflict or smoking during the pregnancy (example). These factors are environmental.

It is impossible to know "the cause" of ADHD, because ADHD is not a disease. It's just the name we give to all the people whose behavior meets the diagnostic criteria. Those percentages are just his personal speculation.

The scientific community THINKS there is a link with neurotransmitters and the prefrontal cortex, but we just don't know enough about how the brain works to actually prove this.

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u/HD_ERR0R May 30 '17

4 min https://youtu.be/SHVbx293eCs

He talks about 5 at risk genes that control dopamine. Maybe you can't have ADHD without having those at risk genes?

Maybe just having 1 or 2 isn't enough to have ADHD but then environment triggers them?

So that would mean ADHD is isn't caused by environment unless you have those genes? It's a factor but it alone can't cause ADHD?

Another 4min one on causation https://youtu.be/Bs9-uAvPSrw

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u/[deleted] May 30 '17

So that would mean ADHD is isn't caused by environment unless you have those genes? It's a factor but it alone can't cause ADHD?

Yes, this statement has a lot more support :).

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u/neckbeardface May 30 '17

Yes, the gene by environment interaction. Your environment can "activate" certain genes that wouldn't necessarily be activated without that environment. An example I like is, let's say John has a family history of severe substance use disorders. John is at higher risk of developing a substance use disorder because of his family history but he decides he's never going to drink or use drugs. John doesn't develop a substance use disorder because he's never in that environment. He likely has the genetic influences but not the environment. With psychological disorders, it usually takes both the genetic heritability and the environment.

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u/HD_ERR0R May 30 '17

Isn't that PTSD misdiagnosed as ADHD?

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u/[deleted] May 30 '17

Not necessarily. It's perfectly possible to have no intrusive memories or trauma-related thoughts (no PTSD), and still have reduced concentration and increased hyperactivity and impulsivity.

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u/HD_ERR0R May 30 '17

You're much more qualified than I.

I do Remember when I used to see a psychiatrist. She wasn't sure at first if I had ADHD or PTSD.

We concluded I had both mostly ADHD. And majority of my anxiety stems from my dad. And my social anxiety stems from my step dad.

I guess the only way to say for sure we studies done to compare brain physiology of ADHD and PTSD.

You should watch the full lecture. And let me know which parts you don't agree with. That way I can see both sides. I don't like to blindly accept things as facts even if I agree with it.

I know that's asking a lot. But I don't like spreading misinformation and the video seemed very factual. But brain is hard to understand and the lecture is 3 years old.

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u/[deleted] May 30 '17

Honestly, I think most of the information in the video has a basis of truth. He just says it in a very conclusive way, whereas the larger scientific community is still "wondering if" and "hoping that".

I can't blame him for it though. He's played a big part in disseminating information about ADHD. I think it's justified to leave out some doubts and details when talking to the general public.

I think I was a little nitpicky because it's a subject I care about :). Best of luck on your personal journey!

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u/HD_ERR0R May 30 '17

Alright cool. I wish I could find one topic and go into that. Like as soon as I learn the basics of an area of study I lose interest.

Psychology First aid Computer science Drama Engineering

I change my major every 2 terms.

Also sorry about all the Random replies. To different replies.

Also need to stop going on Reddit in the shower.

Bye. I'll edit my comment so it's less stated as s fact And environment doesn't play a factor. When it does.

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u/HD_ERR0R May 30 '17

This is where my info comes from. 10 min clip from the lecture.

https://youtu.be/G2u8E5UqEHU