What Role Does Genetics and Environment Play in Understanding Mental Health?

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So in general that's a big question that we keep asking is it nurture or nature? And I think one of the best ways to think about this is in the genetics loads the gun and your environment pulls the trigger, so that there are times in your life where you're under a lot of stress and if you have the chins for depression you're going to be more likely to develop a full blown major depressive disorder in your teen years than somebody else. But if there isn't that stress or there isn't that kind of toxic environment you could most likely just go that disease won't show it's face.

We certainly know that with autism that, it is clearly highly generic disease. We know that with the ADHD, and how do we know that? When, we look at identical twins versus fraternal twins. Identical twins have identical DNA and so if one identical twin has ADHD it's about 97-98% chance that the other twin identical twins can have it and yet if you are fraternal twins you have as much shared DNAs as any set of siblings.

And if one has ADHD only like 70% or 68% that other twin will have it. And that's really important stuff because the reason that's important, that just gives us confirmation that in that case, nature is temping nature. It isn't having a dis-organised mother who gets you ADHD it's having two parents who're loaded with genes for ADHD that increases the risk for getting it.