Considering the article is only a few paragraphs, and right in the middle of the article it states "dining on pork bung at your favorite Italian restaurant is improbable (most hog bung is exported to Asia)". I don't see how you have any factual support for the statement "a lot".

In fact, there isn't even anecdotal evidence listed.

Apologies, the correct link is the This American Life episode linked in the story I linked, but that episode appears to have been pulled offline. Here's a transcript: http://www.thisamericanlife.org/radio-archives/episode/484/t...