Heal the Pain, Comfort the SpiritSpecialists estimate that as many as 60 million Americans suffer from chronic pain, and approximately 20 percent of the population in most developed countries reports having chronic pain. According to one study, chronic back pain alone afflicts more than four million Americans, and nearly 50 percent of these are disabled by it. Pain is the most frequent cause of disability in the United States, with as many as 50 million Americans on short or long