Eight out of 10 people will have a significant lower-back-pain episode at some point in their lives.
Lower-back pain is among the most common types of pain, followed by headaches, neck pain, and facial pain.
About 30 to 40 percent of those who have one episode may have another. (But most people can keep functioning at a high level.)
The cost of treating lower-back pain is upwards of $100 billion a year.
Lower-back pain causes 5 percent of Americans to miss one or more days of work every year.
