Wow, a long-term study on HFCS shows how bad it really can be.

"A notable finding from this research indicated that chronic HFCS consumption resulted in significant impairments in cognitive functions that are critical to daily living. These included deficits in working memory, decision-making, and even social behaviors essential for establishing interpersonal relationships."

https://bioengineer.org/impact-of-high-fructose-corn-syrup-on-aging-rat-brain/