WebMD 100 million Americans with chronic pain WebMD United States 100 million Americans WebMD Health News – June 29, 2011 100 million Americans 100 million Americans 100 million Americans WebMD 100 million Americans 100 million Americans 100 million Americans more than 100 million people costs in excess of $600 billion annually $600 billion a year according to a report from the Institute of Medicine (IOM). $600 billion per year 100 million Americans experience chronic pain a 2011 study from the Institute of Medicine 100 million Americans experience chronic pain Institute of Medicine (IOM) WebMd WebMD over 100 million Americans WebMD 100 Million United States 100 million Americans 100 million WebMD suffer from chronic pain 100 million Americans chronic pain 100 million people one hundred million Americans suffer from chronic pains