Cartilage between bones acts as a cushion and provide a smoother surface for joints to rub against. In oth â¦ er places it acts as a shaping structure. The tip of the nose and ears are composed almost entirely out of cartilage.
Story at-a-glance 1  -. Eating your boogers may help introduce pathogens from your environment to your immune system, helping it to learn and build defenses, according to a new theory in support of the hygiene hypothesis.
Of course, as you might expect, finding a large sample size of volunteers is something of a hurdle. Another name that comes up whenever the subject of eating boogers is mentioned is lung specialist Dr. Friedrich Bischinger. In 2004, he reasoned that eating boogers is healthy for a similar reason that Napper did.