I'm pretty sure we've all had those nasty colds where food seems to have no taste, but what if everything you ate tasted awful?
"The problem has a medical name: metallogeusia...The disorder typically appears about two days after ingestion of a rogue pine nut, and can last for up to nine weeks...He simply cannot eat because everything tastes so horrible."
If you really like pine nuts, be careful where they're imported from. Scientists believe they know where the trouble nuts are coming from:
"A January 2011 report in the Journal of Toxicology suggests that taste disturbances following consumption of pine nuts is related to a species from southern China, the Pinus armandii (white pine)....Pine nuts from the Pinus armandii genus can be identified with some certainty: they are shorter and fatter than the long-grain rice shape of the typical European or American variety, shaped more like corn kernels and have a brown tip."
Full article
here.