Stefan Gates in his book Gastronaut discusses eating dried nasal mucus, and says that 44% of people he questioned said they had eaten their own dried nasal mucus in adulthood and said they liked it.[3] As mucus filters airborne contaminants, eating it could be thought to be unhealthy; Gates comments that "our body has been built to consume snot", because the nasal mucus is normally swallowed after being moved inside by the motion of the cilia.[3] Friedrich Bischinger, a lung specialist at Privatklinik Hochrum in Innsbruck,[4] says that nose-picking and eating could actually be beneficial for the immune system.[5][6]

There is literally zero reason not to eat your boogers; a high IQ activity.