Lower back pain is the most common and also the most troubling illness in our daily lives.  Data shows that during a course of life, 80% of people will experience lower back pain, and 30% of people are suffering from it at the moment; lower back pain is the number one reason for people to take time off from work.  From a medical point of view, lower back pain is only one symptom of back pain.  There are many causes for this illness, such as lumbar disc problems, facet joint problems, lumbar spine disorders, nerve compression, soft tissue injury, muscle strain and so on.