Cervical spondylosis is caused by age-related deformation of the cervical spine and intervertebral discs. This deformation presses the nerves and interferes with nerve transmission.
In addition, as the facet joints become looser with age, the daily posture accelerates the displacement of the cervical spine.
You may have heard the term straight neck. In recent years, with the spread of smartphones, there are more opportunities to bow for a long time. In the old days, it is the same posture as operating a personal computer.
For a long time, the habit of head down causes the cervical spine, which would be curved, gradually shift forward, finally straighten. And it will become ‘a straight neck’.