Studies have shown that your risk for breast cancer is due to a combination of factors. The main factors that influence your risk include being a woman and getting older. Most breast cancers are found in women who are 50 years old or older.
According to the Centers for Disease Control, most cancers are diagnosed in women over As the percentage of older Americans continues to rise, we can expect an increase in the number of newly diagnosed cases of breast cancer. Learn more about how different factors appear to slightly increase your risk for developing breast cancer.
Starting menstrual periods at a young age is linked to a small increase in breast cancer risk [ 11, ]. Women who began their periods before age 12 have about a 20 percent higher breast cancer risk compared to those who began their periods after age 14 [ 15 ]. The increased risk of breast cancer linked to a younger age at first period is likely due, at least in part, to the amount of estrogen a woman is exposed to in her life.
Breast cancer is the most common cancer in women worldwide. In the Moroccan context, the role of well-known reproductive factors in breast cancer remains poorly documented. The aim of this study was to explore the relationship between menstrual and reproductive factors and breast cancer risk in Moroccan women in the Fez region. A total of cases of breast cancer and age-matched controls were included.
Please note that this is the single most important factor which is directly responsible for breast cancer, and explains why there has been a surge in the numbers of cases with breast cancer. Breast tissue is responsive to the hormone estrogen, and prolonged action of estrogen on the breast is not desirable; in a majority of breast cancers, estrogen is responsible to 'drive' the cancer cells. The following image represents hormonal changes in a normal menstrual cycle: In a normal menstrual cycle of 28 days, the predominant hormone in the first 14 days is estrogen.
You may have just received an abnormal mammogram result, or perhaps you or your health care provider found a breast lump or other breast change. Keep in mind that breast changes are very common, and most are not cancer. This page can help you learn about symptoms during your lifetime that are not cancer as well as follow-up tests used to diagnose breast conditions and treatments for specific breast conditions.
A risk factor is something that increases the risk of developing cancer. It could be a behaviour, substance or condition. Most cancers are the result of many risk factors.
Tamoxifen is one of the most common endocrine therapy drugs. It has been shown to decrease the chance of recurrence in some early-stage breast cancers and to prevent the development of cancer in the opposite breast. Tamoxifen can also slow or stop the growth of cancer cells present in the body.
The earlier a girl gets her first period, the greater her risk of developing breast cancer later in life. That's because cancer risk rises the longer a woman's breast tissue is exposed to estrogens released during her menstrual cycle, so fewer pregnancies, later age at first pregnancy and later menopause also are risk factors because they give estrogen more time in a woman's system. Given reports that more girls are hitting puberty earlier, does that mean that more women might develop breast cancer, and at an earlier age? Girls who begin their periods before age 12 have about a 20 percent higher risk of developing breast cancer compared with those who began their periods after age 14, according to a paper in the Annual Review of Public Health.