9 causes of breast cancer. These 10 types of people are at high risk

Breast cancer is a common breast cancer. Nowadays, breast cancer is becoming more and more common. So what is the cause of breast cancer? Who is more likely to get breast cancer? Let's take a look.

Breast cancer causes

Early menarche and late menopause:

The incidence of breast cancer in women is from 0 to 24 years old, gradually increases after 25 years old, reaches a peak in the 50-54 age group, and gradually decreases after 55 years old. Compared with those over 17 years old, the relative risk of breast cancer increases by 2.2 times. The risk of amenorrhea over 55 years old is twice the risk of breast cancer under 45 years old. Early menstruation and late menopause are the two main risk factors for breast cancer. In recent years, breast cancer

2. Genetic factors:

Studies have found that women with bilateral breast cancer before menopause have a nine-fold risk of breast cancer compared to the general population, and the average age of second-generation breast cancer patients is about 10 years earlier than the general population. Women with sisters who have breast cancer have three times the risk of the general population. It should be emphasized that breast cancer is not directly inherited, but a "cancer predisposition." Relatives of breast cancer patients may not necessarily develop breast cancer, but they are more likely to develop breast cancer than the general population.

3. Marriage and childbearing:

Epidemiological studies have shown that although infertility or first child is also a disadvantage for women who get married after the age of 30, the risk of breast cancer in unmarried women is twice that of married women. Experts believe that childbirth has a protective effect on the breasts, but this only applies to people who give birth at full term before the age of 30. Studies in recent years have shown that breastfeeding can protect against breast cancer, mainly in premenopausal women.

4. Ionizing radiation:

The breast is a tissue that is more sensitive to the carcinogenic activity of ionizing radiation. When the breast is young, it is the stage of active mitosis and is most sensitive to the carcinogenic effects of ionizing radiation. The effects of ionizing radiation are cumulative. The risk of multiple low-dose exposures is the same as that of high-dose exposures, with a dose-effect relationship. Among the survivors of the atomic bomb explosion in Nagasaki, Japan, the proportion of breast cancer increased significantly, and the chances of children and adolescents receiving chest radiotherapy also increased.

5. Unhealthy eating habits:

Unhealthy eating habits lead to a significant increase in the risk of breast cancer. The incidence and mortality of breast cancer are closely related to the amount of fat digested per capita. The high income of some company employees has led to a high standard of living and changes in diet. People's diet is mainly meat and seafood products, and gradually formed a more "popular" acidic physique. Most people form unscientific and unhealthy "high-calorie, high-fat" eating habits, which greatly increases the incidence of breast cancer.

6. Unhealthy Lifestyle:

Some female white-collar workers who have been working in offices for a long time sit less, lack exercise, and are exposed to less sunlight. They do more exercise and sweat in the sun, which helps eliminate excess acidic waste in the body. But now more and more people use cars to walk, and the amount of exercise is greatly reduced. In the long run, acidic metabolites will stay in the body for a long time, leading to systemic acidification. Due to work, most professional women wear bras tightly for a long time and rarely "loosen" their breasts; some professional women, under the pressure of work or the pursuit of career success, live a single noble or DINK life, do not get married, and do not want children. All of these are related to breast diseases.

7. Depression and excessive stress:

According to the survey, introverted personality, long-term depression, people's pressure is increasing. When the pressure cannot be released, it will affect the body and cause body acidification. Early life is an important factor leading to cancer. Young women in cities are facing fierce competition pressure, and their spirits are in a state of tension for a long time, resulting in emotional instability and calmness. These mental factors combined with bad living and working methods cause further damage to the breasts.

8. Hormones:

Breast cancer is related to endocrine disorders in the human body. Among various endocrine factors, estrogen and progesterone are the most important. Research results show that estrogen stimulates excessive proliferation of breast epithelial cells, which is an important cause of breast cancer. Commonly used hormone products and hormone replacement therapy for menopausal women can increase the risk of breast cancer.

9. Drugs:

Some drugs, such as antihypertensive drugs, reserpine, thiazide and steroid drugs, can increase the incidence of breast cancer. Some health products, skin care products and cosmetics contain carcinogenic ingredients, so you should be especially careful when using them. In addition, harmful components in the air and residual pesticides in vegetables and fruits all have carcinogenic components to varying degrees.

People at high risk of breast cancer

1. If you have breast cancer or ovarian cancer and have a family history of breast cancer (first-generation relatives (mother, sister, etc.), this family is a high-risk group.

2. No child or child born after 35 years old, no breastfeeding or childbirth after 40 years old

3. First menstruation before the age of 12, late menopause (e.g. menopause after the age of 55)

4. Being too fat

5. Hormone exposure is hormone replacement therapy

6. Regular intake of high fat or high animal fat, preference for cooked beef

7. Breast and pelvic surgery

8. Excessive exposure to radiation or carcinogens (such as X-ray fluoroscopy or radiotherapy)

9. Metastasis to the breast through other cancers (such as endometrial adenocarcinoma)

10. Chronic mental stress and lack of regular exercise