I recall the book “Change your brain, change your life” covers the link between brain trauma and eventual drug abuse as a way to counter an undiagnosed medical

I recall the book “Change your brain, change your life” covers the link between brain trauma and eventual drug abuse as a way to counter an undiagnosed medical issue. Although I’m not 100% sure it was that book - For curiosity: I’m wondering if Jack had any history of concussion or other head injuries before the addiction. - It was also mentioned that these patients had to be prompted multiple times before they remember accidents like falling off their bikes or tripping etc. as they would promptly forget and get on with their lives.