Science today isn't the same as the science 2000 years ago was but some principles remain the same. The human knowledge constantly grows but with more knowledge there comes even more mysteries and unsolved questions, so science is always going forward.
Causes. The most common cause of a cervical herniated nucleus pulposus is gradual degeneration of the disc, attenuation (weakening) of the posterior annulus fibrosis, and subsequent protrusion of the nucleus pulposus into the spinal canal causing compression of the nerve root.
Causes of a Herniated Disc. 3 Common Herniated Disc Causes. There are many causes of a herniated disc, but it all comes down to this: your intervertebral disc (the cushion in between your vertebrae in your spine) pushes out or bulges or even ruptures.