When my grandfather was a boy, he fell, face first, off his bike, onto the concrete. When he came to his senses, he looked in the mirror and found that all his teeth had turned black. The doctors dismissed it as a case of a lack of calcium.....except my grandfather drank a quart of milk every day at dinner. Luckily for him, the army found that he had a tumor.....just in time by the way, because he would have died in the not too far future if they had not removed it. Of course, in removing the tumor they had to remove all of his teeth. He ended up growing from 5'9 to 6'4 after he got that tumor out at the age of 19. So....yes....wear your helmet.
