The specific causes of ovarian cancer are still unknown, which may be related to family heredity, age, endocrine factors, bad dietary habits and so on. 1. Family heredity: if there are women carrying tumor genes in the family, the incidence rate of their offspring is higher than that of ordinary people. 2. Age: Ovarian cancer is more common in postmenopausal women, and about 50% of it occurs in older women over 65 years old. And the incidence rate of women over 70 years old is higher than that of young women around 20 years old. 3. Endocrine factors: women with early menarche, before 12 years old; women who have not given birth or have given birth after 35 years old; women applying ovulation stimulating drugs, etc., the incidence rate of this part of women is higher than that of other women. 4. Bad dietary habits: eating more high-fat food, such as animal oil, animal offal and so on. Women who smoke a lot are also more likely to develop ovarian cancer. It is recommended to maintain a healthy lifestyle, keep emotional stability, and develop a good habit of regular medical checkups. If you feel unwell, it is recommended to consult a doctor in time.