According to the survey, the incidence of cervical spondylosis in people who work long hours is four to six times more likely than in people who do not work with their heads down. Here are the five causes of cervical spondylosis. In addition to natural aging, cervical spondylosis is usually caused by the following five causes: 1. The largest proportion of cervical spondylosis occurs in people who work with their heads down for a long time or whose heads and necks are fixed in a certain posture. Accountants, draftsmen, surgeons, computer operators, carving, embroidery, writing and other occupations, often work continuously for hours or even more than ten hours a day with head down and neck flexed, forcing the neck joint tissue to be in a state of fatigue for a long time, accelerating cervical disc degeneration and soft tissue strain on the neck. 2, smoking is very harmful to patients with cervical spondylosis, is also one of the causative factors of cervical spondylosis. Nicotine and other harmful substances in smoke can lead to capillary spasm, resulting in reduced vascular supply to the cervical vertebrae, calcification of the cartilage end plate connecting the intervertebral disc with the upper and lower vertebrae, decreased aerobic supply to the intervertebral disc, increased waste, and decreased acidity in the intervertebral disc, eventually causing metabolic changes to the intervertebral disc and degeneration, resulting in disc herniation. 3, in patients with cervical spondylosis, there is a considerable portion of patients, especially those in the early stage or attack of cervical cervical spondylosis, and some patients often have a history of neck pain. Through experimental and clinical studies, it is confirmed that the degeneration of the intervertebral disc is directly proportional to the degree of neck pain, especially in the group of young and middle-aged patients. 4, long-term to take a side lying position, so that the cervical vertebrae lateral bending, lateral force imbalance, a long time will also damage health. If the pillow is too high, poor sleep position, uneven internal forces on the intervertebral disc, can make the cervical small joints and muscles lose mechanical balance, accelerating degeneration. Such as playing mahjong for a long time, watching TV, especially lying in bed or side lying on the sofa watching TV, so that the cervical vertebrae in a state of flexion for a long time, after the neck muscles and ligaments overtime load, can cause strain injury. As the saying goes, “no worries about high pillow”, but practice has proved that “high pillow” is very harmful. 5, often driving personnel due to long-term fixation of the neck in a posture, the neck muscles in a state of long-term tension, and cervical discs are also in a high-pressure state, long-term, intervertebral discs and intervertebral joints degeneration rate is much higher than the normal population. Similarly, cervical spondylosis is more common because of frequent emergency braking. The above are the five causes of cervical spondylosis, I hope you can pay more attention in ordinary life, to protect their cervical spine.