1 . age
Increased breast cancer risk depends on the age of a woman . In the U.S. , 1 out of 227 women aged around 30 years was diagnosed with breast cancer , while for women aged over 70 years the number increased to 1 in 26 women .
2 . History of breast cancer
A woman is more likely to be diagnosed breast cancer if she had never been exposed to the disease before. For if a woman has had cancer in one breast , then the higher the chances of cancer can also spread to the other breast .
3 . family history
Risk of breast cancer increases if a woman has a mother , sister or child of women who had previously been diagnosed with this disease . The risk is also increased if the number of family members who were diagnosed more than 1 person .
4 . genetic mutation
Women with mutations in BRCA1 or BRCA2 is about 5 times more likely to be diagnosed with breast cancer . But even so , less than 1 percent of women have this mutation .
5 . Having dense breast tissue
The risk of breast cancer in a woman will increase if he had denser breast tissue .
6 . There are changes in the non - cancerous breast
Non-cancerous breast changes such as atypical hyperplasia ( abnormal increase in breast tissue ) , ductal carcinoma in situ ( abnormal cells in the breast lapidan ) and lobular carcinoma in situ ( abnormal cells in the milk-producing glands ) , are known to increase the risk of breast cancer in women .
7 . Early menstrual period
Women who have menstrual periods first time at the age under 12 years old have an increased risk of breast cancer is higher.
8 . gestational age
The risk of breast cancer increases a woman if she is pregnant at the age of 30 years or not having children at all . In contrast , this risk would be reduced if she is pregnant and has a child at the age of about 20 years .
10 . age of menopause
Women who experience menopause after age 55 have an increased risk of breast cancer is higher.
11 . hormone therapy
Taking hormone therapy such as estrogen and progestin supplement intake for more than 5 years may increase the risk of breast cancer in a woman .
12 . Radiation exposure in chest
A woman's risk of breast cancer increases if he often had to have radiation therapy to the chest , especially during puberty .
13 . Weight loss and physical activity
Women who are overweight or obese have an increased risk of breast cancer is higher. Meanwhile, the physically inactive also increases the risk of breast cancer in women . Therefore , make it a habit to exercise regularly to help lower the risk.
14 . consumption of alcohol
Consuming alcoholic beverages more than 1 cup per day will increase a woman's risk of breast cancer .
15 . consumption of drugs
A woman who took the drug DES ( diethylstilbestrol ) during pregnancy to prevent miscarriage may increase the risk of breast cancer .
16 . breastfeeding
Breastfeeding is very beneficial not only for babies , but also for the mother . Known breastfeeding may lower a woman's risk for developing breast cancer .
17 . race
In the United States , white women have the highest number of people with breast cancer . However , African-Americans are even more at risk of dying from breast cancer due to longer diagnosed , so the treatment was too late .
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