Scott Napar, a biochemical professor from the University of Saskatchewan often tells his students about his two daughters, explaining how they pick their noses and then eat the stuff they find afterwards. He believes this is the right thing to do. Right now you’re probably questioning his sanity.
According to Napper we, the human beings, have evolved through time under filthy conditions and that probably our desire for better hygiene and sterile surroundings isn’t doing much good to our immune system. In his opinion picking our nose and eating the stuff we find in there, could actually have a positive side for our health.
The professor explains that the pathogens which are found within the mucus in our snot could actually help our immune system in order to show it what’s the true nature of our surroundings.