This sounds like a Chubbyemu video premise. (It's an excellent YouTube channel that posts semi-dramatised medical educational videos, usually following a fictionalised patient presenting to ER after ingestion of some substance, with an explanation of how that substance causes problems in the body and how a medical team might try to address it.)
Actually, there has been more than one video about oxalate nephropathy already, but from more obviously potentially harmful sources (https://youtube.com/watch?v=QJs431FsC_k&t=6m40s, https://youtube.com/watch?v=UrbylXMU8Mw&t=7m45s).