Your spinal discs serve as hydraulic shock absorbers between vertebrae, distributing compressive forces during movement. Each disc contains roughly 80% water at birth, but beginning around age 25, this hydration progressively declines. By age 50, disc water content can decrease by 20-30%, making the annulus fibrosus brittle and vulnerable to tears. This process, called disc desiccation, is the primary age-related factor behind herniations. Chiropractic care helps maintain spinal alignment and reduce uneven mechanical loading that accelerates this degeneration.
When disc hydration drops, the annulus develops micro-tears under normal daily stress. Repetitive loading from bending, twisting, or lifting causes these tears to propagate outward through the disc layers. Eventually, the weakened annulus can no longer contain the nucleus pulposus, which herniates posterolaterally where the annulus is thinnest, directly into the path of exiting spinal nerve roots.
The inflammatory cascade triggered by herniated disc material compounds the mechanical compression. Chemical mediators including phospholipase A2, interleukin-6, and tumor necrosis factor-alpha are released from the exposed nucleus pulposus, creating chemical radiculitis that amplifies nerve sensitivity. This dual mechanism of physical compression and chemical inflammation explains why many patients experience pain disproportionate to the size of the herniation itself.
