"Thirty years ago, Susan Sontag wrote, "Everyone who is born holds dual citizenship in the kingdom of the well and the kingdom of the sick ... Sooner or later each of us is obliged, at least for a spell, to identify ourselves as citizens of that other place." Now more than 133 million Americans live with chronic illness, accounting for nearly three-quarters of all health care dollars, and untold pain and disability. There has been an alarming rise...