How is breast cancer caused
summary
For a disease, we need to know its cause and what causes the disease, so that we can avoid the occurrence of disease in our life. For breast cancer, a frequent disease, we should understand its pathogenesis. Let's understand what causes breast cancer.
How is breast cancer caused
First incidence rate: incidence of disease in women is increasing with age, rare before menarche, and rare before 20 years old. But incidence rate has increased rapidly after 20 years old, 45~50 years old, but relatively flat, and the incidence rate of menopausal women has continued to rise, reaching the peak at 70 years old. The death rate also increases with age. The death rate increases gradually after 25 years old and keeps rising until old age.
Second, genetic factors: the risk of breast cancer in women with a history of breast cancer in their first direct family is 2-3 times higher than that in the normal population.
Third, gene mutation: oncogene can have two stages of cooperation, but there are differences, namely: start-up stage and promoter stage. At present, the relationship between oncogenes and their products and the occurrence and development of breast cancer has been concluded as follows: several kinds of oncogenes participate in the formation of breast cancer; the first introduction of oncogenes into normal cells does not necessarily lead to the occurrence of tumor, which may involve many times before the occurrence of cancer; oncogenes not only participate in cell mutation at the start-up stage, but also play a role after the formation of breast cancer; There may be different genes involved in the process of normal mammary epithelial cell proliferation carcinogenesis.
matters needing attention
The above is the inducing factors of breast cancer, it will increase with age and the decline of immunity, then ask female friends to strengthen exercise, young female friends try to reduce the use of contraceptives, pay attention to these in life can avoid the occurrence of breast cancer.
