Well, the way I see it, outside of very high IQ in combination with education that is multiple topics of biochemistry, effects of intelligence are small and are easily dwarfed by things like those demographical correlations.

There probably are some scams or virulent memes that prey on insecurities specific to high-IQ people, though. I can't think of anything specific offhand

Free energy scams. Hydrinos, cold fusion, magnetic generators, perpetual motion, you name it. edit: or in the medicine, counter intuitive stuff like sitting in an old uranium mine inhaling radon, then having so much radon progeny plate-out it sets nuclear material smuggling alarms off. Naturalistic fallacy stuff in general.