Because they are responsible for controlling genetic details or information which is in our DNA .
The time your face will be numb will determine how much medicine they use to numb
The answer to this is vitamin A. And vitamin A is really important because it helps your eyes, which is the reason why many people in 3rd world countries who don't get enough vitamin A are prone to being blind. Hope this helps!
True hospitals are easily hacked and false medical bills sent out