Well some conditions you can’t get unless you have the genes regardless of what your environment is (thinking Down Syndrome is an example here), and others you

Well some conditions you can’t get unless you have the genes regardless of what your environment is (thinking Down Syndrome is an example here), and others you will get essentially regardless of what your environment is if you have the genes (thinking the BRCA genes for breast cancer). In this case, everyone experiences some degree of trauma, and the mix of your trauma experience and your genetic predisposition combine to yield ADHD, or not.