I think there are complicating factors here that I intentionally chose to leave out of my comment because I get so much flak for thinking I know anything with confidence that isn't "common knowledge."

I was involved with The TAG Project because I was homeschooling my two 2xe sons. I basically believe that people with very high IQs have different nutritional needs specifically to support their weird brains.

My extra smart son gets really difficult to deal with when he's deficient in B vitamins, a vitamin class important to the brain. He easily gets deficient and there is no point arguing with him when he's deficient.

So if you are basically chronically malnourished because of special nutritional needs that are currently unrecognized, there's little hope of getting that issue redressed. It snowballs from there: nutritional deficiency causes poorer cognition and more mental health issues which suppresses your ability to cope and becomes a general downward spiral that the world currently can't even properly diagnose.

(The above is opinion based in part on being sort of a subject matter expert. Please don't ask me to "cite my source." My pro bono professional experience and personal experience is the source of my opinion.

I'm not writing a PhD thesis here. I'm having a conversation. Thank you.)