The brain is responsible for much more than just the physical body. It is also responsible for emotion, intelligence, personality and consciousness. Therefore, a brain injury can affect way more than just your head: It can permanently, fundamentally alter your human nature.
Car accidents can cause a variety of traumatic injuries, which can number among the more serious types. The impact from a car crash can cause significant damage to the brain even in the absence of penetrating wounds or direct impact to the head.
A research study of the brains of 202 former football players who had donated their brains to science found that 177 -- almost 90 percent -- showed signs of chronic traumatic encephalopathy. The brains came from deceased athletes who played in the NFL, during college and even in high school.