More Anesthesia Than Average
Perhaps this is related to the differing pain threshold that redheads have, but one study has shown that redheaded females require at least 19-20% more anesthesia in order to be sedated while compared to others. The mutation that is associated with the pain threshold is the cause of this. Redheads also need more topical anesthetics like Novocaine or Lidocaine than others to feel the same effect.
Many Famous Redheads
While redheads are very rare, there are many well known redheads throughout history, many of which have been very prominent and influential. These include historical figures like Cleopatra, Napoleon Bonaparte, Galileo Galilei, Vincent Van Gogh, and Thomas Jefferson. There are also many current day celebrities who proudly wear their natural red hair.