1 smoking and drinking, smoking and drinking are the cause of head and neck cancer important pathogenic factors, 85% head and neck cancer as
1 smoking and drinking, smoking and drinking are the cause of head and neck cancer important pathogenic factors, 85% head and neck cancer associated with smoking and drinking, but the effect on nasopharyngeal carcinoma smoking has no effect on other large head and neck cancer.
2 diet: now consider eating more salted meat foods can increase the risk of nasopharyngeal cancer. Pickled foods rich in nitrosamine compounds, the compounds were proved to induce nasopharyngeal carcinoma.
3.EB (Epstein-Barr) virus: the researchers found EB antibody in the serum of patients with nasopharyngeal carcinoma, the recent molecular biology research provides a more direct evidence for the carcinogenic properties of the herpes virus. In addition to the virus infection, there are also some physiological and immunological factors.
4 genetic factors: ethnic and familial aggregation of nasopharyngeal carcinoma. 10% of NPC patients had a family history, in which parents, brothers and sisters were significantly more likely to have nasopharyngeal cancer than other tumors. Overseas Chinese in the incidence of nasopharyngeal carcinoma was also higher than that of the local people, their descendants still maintained high prevalence rate of nasopharyngeal carcinoma.
5 environmental factors: South China Guangdong, Guangxi, Hunan and other provinces and Southeast Asia, North Africa, the Arctic region is a high incidence area of nasopharyngeal carcinoma, when people move to other areas, the probability of offspring will decrease the risk of nasopharyngeal carcinoma.