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.
Primary Cause of Viral Hepatitis. The primary cause of Viral Hepatitis is the result: 1  of transmission of an infectious agent by another person by one or more of the following: saliva, air, cough, fecal-oral route, surfaces, blood, needles, blood transfusions, sexual contact, mother to fetus, etc.ist of causes of Viral Hepatitis. Following is a list of causes or underlying conditions (see also Misdiagnosis of underlying causes of Viral Hepatitis) that could possibly cause Viral Hepatitis includes: 1  Multiple sexual partners. 2  Intravenous drug users. 3  Haemophiliacs who receive blood clotting factors.