"Once a spinal disc has “slipped,” it seems like it’s in a biomechanically awkward situation and can’t recover any more than a broken window can reassemble itself. And yet several studies have suggested that herniated discs spontaneously de-herniate!
This is the first meta-analysis of those studies. The pooled data from eleven studies shows an extremely high overall incidence of disk resorption: a whopping 66% in patients who received “conservative therapy.”
More study needed, of course, because none of the studies analyzed were randomized controlled trials, and there was barely enough data for meta-analysis. However, the final number is so high that it’s safe to assume that approximately “lots” of herniations resolve on their own, probably at least half."
~ Paul Ingraham,