Picking your nose and eating it is one of the best ways to stay healthy, according to a top Austrian doctor.
Innsbruck-based lung specialist Prof Dr Friedrich Bischinger said people who pick their noses with their fingers were healthy, happier and probably better in tune with their bodies.
He says society should adopt a new approach to nose-picking and encourage children to take it up.
Dr Bischinger said: "With the finger you can get to places you just can't reach with a handkerchief, keeping your nose far cleaner.
"And eating the dry remains of what you pull out is a great way of strengthening the body's immune system.
"Medically it makes great sense and is a perfectly natural thing to do. In terms of the immune system the nose is a filter in which a great deal of bacteria are collected, and when this mixture arrives in the intestines it works just like a medicine.
"Modern medicine is constantly trying to do the same thing through far more complicated methods, people who pick their nose and eat it get a natural boost to their immune system for free."
He pointed out that children happily pick their noses, yet by the time they have become adults they have stopped under pressure from a society that has branded it disgusting and anti social.
He said: "I would recommend a new approach where children are encouraged to pick their nose. It is a completely natural response and medically a good idea as well."
And he pointed out that if anyone was really worried about what their neighbour was thinking, they could still enjoy picking their nose in private if they still wanted to get the benefits it offered.