January 2, 2022 – NFL Star Quaterback Tua has died due to CTE doctors say. CTE occurs when repetitive head trauma begins to produce abnormal proteins in the brain known as “tau.” The tau proteins work to essentially form tangles around the brain’s blood vessels, interrupting normal functioning and eventually killing nerve cells themselves. Patients with less advanced forms of the disease can suffer from mood disorders, such as depression and bouts of rage, while those with more severe cases can experience confusion, memory loss and advanced dementia.