Keep Your Disks Healthy. In normal healthy discs, the nerves (sinuvertebral) only sense pain on the periphery or outer regions of the disc. In grossly degenerated disks, nerves may penetrate into the center (nucleus) of the disk and be more vulnerable to degeneration and/or inflammation. Lancet, 1997

Another Reason To Maintain Spinal Health! Whatever the cause, by age 50, 85-90% of adults show evidence of degenerative disk disease at autopsy. Arthritis & Rheumatism, 1979