Current research shows that the development of bladder cancer is mainly related to genetics and lifestyle habits, such as smoking, poor diet structure, chronic infection, etc. may be high risk factors for bladder cancer. High risk factors for bladder cancer 1. Smoking: Some studies show that the risk of bladder cancer among smokers is twice as high as that of non-smokers. Among them, those who smoke ordinary cigarettes have the highest prevalence rate, while those who smoke cigars have a relatively low risk. 2.Bad diet structure: People who eat nitrate-containing foods and high-fat diet for a long time have a higher prevalence. 3.Chronic infection: for example, long-term chronic urinary tract infection. 4.Carcinogenic substances: The risk of developing carcinogenic substances is increased by 20% for those who are exposed to them for a long time. The effects of these carcinogens are often insidious and take a long time to manifest, sometimes even 30 to 50 years. Of course, this risk is also related to the duration of exposure, the amount of exposure and the type of carcinogens. Some high-risk occupations include: dye workers, printers, shoe workers, and truck drivers. The dangerous chemicals are mainly from dyes, paints, inks and aromatic amines contained in artificial leather. 5, certain chemotherapy drugs: for example: cyclophosphamide and arsenic, etc. 6, schistosomiasis infection: this mainly occurs in some backward countries, especially in northern Africa. 7.Age: The incidence of bladder cancer increases with age in people over 40 years old. Most of the bladder cancer patients are over 60 years old. Thus, some scholars suggest that people over 40 years old should be alert to the occurrence of bladder cancer, especially when they find hematuria, they should go to the hospital in time. 8.Gender: The incidence rate of men is 4 times higher than that of women. 9.Race: In the United States, the incidence of bladder cancer among Caucasians is twice as high as that among African Americans, Asian Americans, Hispanic Americans and Native Americans. Among them, the incidence rate is lowest among Alaska natives. 10.Family history: People who have grandparents with bladder cancer will have a higher rate than others.