It's all just talk

Sweet corn used for high fructose corn syrup was genetically mutated through radiation by nuclear blast in the 1950s

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1213341/

ref - https://www.reddit.com/r/todayilearned/comments/cug2eg/til_that_sweet_corn_used_for_high_fructose_corn/