Results of a recent systematic review last year which analysed the available research over the last 25 years found that 66% of herniated discs in the lumbar spine heal spontaneously. The looked at studies from United Kingdom, Japan, France, Korea and Italy.
The study concluded that due to the high percentage of discs resorbing that conservative treatment may become the first choice of treatment for lumbar herniated discs.
To have a read of the study, please see here
Incidence of Spontaneous Resorption of Lumbar Disc Herniation