Given how many kids are told to just "shut up and eat it" - and/or didn't have extreme pickiness but got DX'ed perhaps as an adult - I'd say there's a ton of research required to even suggest this as a plausible cause (even for a limited number of cases). It might make things worse, but I highly doubt it's causative.
There is a very popular wrestler who works for WWE who goes by the stage name Triple H. Triple H was part of a group called D Generation X, or DX for short. A clothesline is one of the most basic wrestling moves. This is not sport wrestling, but entertainment wrestling.
