Each year, thousands of Iowans’ lives are changed by brain injuries. A car crash, a fall on the ice, or a hard bump on the head can cause what’s known as ‘traumatic brain injury’ or TBI. Often, the complications of TBI, which include changes in thinking, language, or even general emotions, are often missed. Because of this, TBI is often called a silent epidemic. March is Traumatic Brain Injury Awareness Month in Iowa.