> A big question for me is if the ADHD was always even in the older generations there but was non-diagnosed? Also could the absence of treatment be causal? U

> A big question for me is if the ADHD was always even in the older generations there but was non-diagnosed? Also could the absence of treatment be causal? Undiagnosed people suffer immensely trying to cope and adapt to a neurotypical life. Depression and anxiety disorders are commonly found as comorbidities. The above-normal stress default by itself could probably explain all sorts of aging associated disease and symptoms, I presume. Then you typically find issues with sleep, regular food and water intake ... And yeah, in context, people with undiagnosed ADHD are much, much more likely to abuse drugs, or "self-medicate". Especially smoking and coffee.