Homelessness and Head Injury

One doctor's unscientific take, but still interesting:

One of the jolting realizations that I had while researching this column is that anybody could become like a homeless person — all it takes is a traumatic brain injury. A bicycle fall, a car accident, a slip on the ice, or if you’re a soldier, a head wound — and your life could become unrecognizable. James O’Connell, a doctor who has been treating the most vulnerable homeless people on the streets of Boston for 25 years, estimates that 40 percent of the long-term homeless people he’s met had such a brain injury. “For many it was a head injury prior to the time they became homeless,” he said. “They became erratic. They’d have mood swings, bouts of explosive behavior. They couldn’t hold onto their jobs. Drinking made them feel better. They’d end up on the streets.”