Recently, there has been an increase in the number of breast cancer consultations, and people are concerned about why they get breast cancer and how to prevent it, so we have compiled a list of factors that are highly prevalent in breast cancer for women who are concerned about breast health. There are many of them, but those who are unfortunately “shot” do not need to worry about them, as adhering to good lifestyle habits and regular breast examination will greatly reduce your risk of the disease. Specifically: 1. endocrine factors and hormonal stimulation 2. obesity, long-term high-fat, high-calorie diet 3. early age of menarche, late age of natural menopause or long years of menstruation 4. bad habits, bad habits such as smoking and alcohol 5. family history of breast cancer 6. celibacy, unmarried, sterile after marriage, not breastfeeding after childbirth and too many abortions 7. large age of first birth (>35 years old) 8. ionizing radiation 9. 10. Menarche <12 years old, age of menopause >55 years old, with a period longer than 35 years 11. 14. Over-nutrition and obesity after middle age 15. Long-term application of hormonal drugs, exposure to toxic substances and radiation. Those who have been suffering from benign breast diseases or have a history of breast trauma or surgery