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What are the risk factors in the development of breast cancer?
Risk factors
»People with positive genetic tests (BRCA1, BRCA2)
10%, 15% of breast cancer are because of hereditary transitions, such as family transitions. If the genetic tests (BRCA1 and BRCA2) are found positive in the people who have a family history (mother, aunt, or sister with a breast and ovarian cancer), they are more likely to develop breast cancer.
»People with breast cancer in their mother and sister
First-degree relatives in the family (mother, sister or daughter) double the risk of breast cancer. The presence of two first-degree relatives will triple the risk.
»Early menstruation / late menopause
Women with early menstruation (before 12 years of age) and late menopause (after age 55) have a slightly higher risk of breast cancer. This is because these people are exposed to estrogen and progesterone for longer periods of time.
»People who give birth and breastfeed after the age of 30
 Women who do not have children or who give birth to their first child after the age of 30 increase the risk of breast cancer slightly. The risk of breast cancer is reduced in women who have had too much pregnancy and become pregnant at a young age. This is because the loss of bad hormonal effect on the breast during pregnancy and lactation.
»Hormone (birth control / menopause) treatment
Hormone therapies are very common nowadays. Recent researches has brought many discussions on this subject. Contrary to what we know so far that taking birth control pills increases the risk of breast cancer (slightly). On the other hand, we began to see that hormone treatments after menopause are not as dangerous as they say.
»People with intense breast structure
Breast density is classified according to the proportion of fat and breast tissue contained in the breast. Nozzles with low fat and high breasts are called dense breasts.
Recent studies have shown that dense breast structure increases cancer risk to a small extent.
»People with a history of breast biopsy
Biopsy results of women with a history of breast biopsy should be examined. As a result of breast biopsy, many risk-leading lesions (atypies, insitu lesions, etc.) can be detected. Biopsy results must be reviewed since this will increase the risk of breast cancer.
»People who drink alcohol
Alcohol use increases the risk of breast cancer.
The risk increases with the proportion of alcohol consumed. Women who consume one glass of alcoholic drink per day have a slightly higher risk than women who have never drunk.
This risk increases by 1.5 times in women who consume 2 to 5 glasses of alcohol per day.