Lifetime Risk of Breast Cancer

Although the exact causes of breast cancer is unknown, most experts agree that there are several factors that increase the risk of breast cancer.
On risk factors associated with breast cancer

In the age group, breast cancer was diagnosed:
- 4 of 1.000 women at the age of 30 years
-14 Out of 1.000 women at age 40 years
-26 O from 1000 women at age 50 years
-37 Of 1000 women at the age of 60 years.

Breast cancer risk:

History of breast cancer.
Women who have had breast cancer in one breast have increased opportunity to have another breast cancer or breast cancer could be the same again, in one breast, or in other areas of the body, such as lung, liver, brain, or bone.

Family history.
A woman with breast cancer risk increases if her mother, sister, daughter, or two or more other close relatives such as cousins, have a history of breast cancer, especially if they are diagnosed with breast cancer before age 50.

Women who inherit specific changes (genetic mutations) in BRCA1 and BRCA2 genes are much more likely to suffer breast cancer. They are also more likely to have colon or ovarian cancer. But most women who have a family history of breast cancer do not have changes in BRCA genes.

Mutations in BRCA1 and BRCA2 genes are more common in ethnic groups, such as the Ashkenazi Jews, a genetic test available to determine whether you have the genetic mutations long before the cancer appears. In families where many women have breast or ovarian cancer, genetic testing can show whether a woman has specific genetic changes known to increase risk of breast cancer.

If you change your breasts. Women who have atypical hyperplasia, ductal carcinoma in situ (DCIS) or lobular carcinoma in situ (LCIS) or those who have two or more breast biopsies other noncancerous conditions are more likely to develop breast cancer.

Other factors

- No birth children.
Women who had their first child after age 30 have a greater chance of developing breast cancer compared with women who had their children at a younger age. Women who never had children have an increased risk for developing breast cancer.

- No feeding.
Women who do not breastfeed have a higher risk of breast cancer than those who are breastfeeding. The longer you breastfeed, the lower the risk of breast cancer.

- Race.
In white women, breast cancer is more common than black, Hispanic, or Asian women. However, black women are more likely to get breast cancer at a younger age and are also more likely to die of breast cancer.6

- Radiation therapy.
Woman's breasts exposed a significant amount of radiation at a young age, especially those treated for Hodgkin's lymphoma, have an increased risk for developing breast cancer.

- Hormones.
Female hormones have an important role in some types of breast cancer.

Having extra body fat and drinking alcohol both lead to a higher level of estrogen in the body. Especially after menopause, when natural estrogen levels low, it increases your breast cancer risk.8

The use of estrogen-progestin hormone therapy after menopause for several years or more increases the risk of breast cancer. But within 5 years after you stop using combination therapy, your risk of returning to normal. Long-term use of estrogen alone can increase the risk of breast and ovarian cancer. 7

Starting menstruation before age 12 and beginning menopause later than age 55 years of women's increased risk of breast cancer. The years when you have your menstrual cycle of high-estrogen years. Experts think that the longer you have higher estrogen, the greater your risk for breast cancer.8

Hopefully useful.

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