Traumatic brain injuries can have a number of causes, from a simple fall to a serious auto accident. While most TBIs are the result of a single incident, a slower form of brain injury can occur from repeated blows to the head, such as those received from playing contact sports. The results of this slow build-up of brain damage can be severe and life changing, often affecting the sufferers' ability to work regularly. Receiving compensation for such an injury can be difficult, however, due to the need to prove a specific cause for the condition. For many though, a new study linking contact sports with brain injuries may be of some help.