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The most significant breast cancer risk factors are being a woman and getting older — as most breast cancers occur in women over age 50. Most women don’t get breast cancer, and not all women with the risk factors develop breast cancer.
Knowing your breast cancer risk allows you to address breast cancer risk factors related to lifestyle. You also can be more vigilant about breast cancer prevention and early detection if you are aware of your cancer risk from a family history or other risk factors that you can’t control.
Breast self-exams can be lifesaving, especially for younger women who aren’t ready for regular breast cancer screening mammograms. Women ages 40 and older may be ready to start getting an annual mammogram. Guidelines depend on your age and other risk factors.
Clinical breast health exams, in which a health care provider checks for lumps and changes, can provide an early warning sign. Taking note of how your breasts feel and look can help make lumps, pain, size changes or other variations more noticeable. Discuss any changes with your medical provider.
For some with a high breast cancer risk, a breast MRI scan in conjunction with a mammogram may help detect cancer. Breast MRIs, however, can show abnormal results when no cancer is present.
All Norton Healthcare mammogram and breast cancer screening locations use state-of-the-art 3D mammogram technology, meaning fewer patients need to come back for a second exam. The 3D technology provides more accurate imaging for patients with dense breast tissue or who are at high risk of breast cancer. Many Norton Healthcare breast radiologists have specialized training in breast radiology.
If you have a family history of breast or ovarian cancer, or certain inherited genetic mutations, you may be at higher risk for developing breast cancer. Specialists within the Norton Healthcare Breast Health Programcan help you understand your risks and make informed decisions. If you are at high risk, you have options regarding early detection, screening, and possible next steps.
For many, risk is influenced by family history. If a close relative like a parent, sibling, or child has had breast cancer, your risk is greater. Certain genetic mutations, such as changes in the BRCA1 or BRCA2 genes, also can significantly increase your lifetime risk for breast cancer and possibly ovarian cancer.
While having these risk factors doesn’t guarantee you’ll develop cancer, it may mean that you could benefit from genetic counseling, earlier screening, or other proactive steps.
The high level of connective tissue, rather than fatty tissue, in dense breasts can make it difficult to spot tumors on a mammogram. It can be difficult to distinguish between a small tumor and dense breast tissue.
Dense breast tissue also carries an increased risk of breast cancer, although breast cancer patients with dense breast tissue are not more likely to die of breast cancer than patients with fatty breast tissue.
Scientists don’t yet understand the link between breast density and a higher risk of breast cancer.
Patients who receive radiation to the chest or breasts before age 30 to treat conditions such as Hodgkin lymphoma have a higher risk of developing breast cancer. Radiation to the face as an adolescent to treat acne is also associated with a high risk for breast cancer later in life.
If you had radiation therapy while your breasts were developing in adolescence, your risk is higher.
A personal history of breast cancer carries a moderate risk of developing breast cancer in the other breast or elsewhere in the same breast. This is different from a recurrence of developing breast cancer in the same site.
Certain benign breast lesions, such as atypical ductal hyperplasia or lobular carcinoma in situ, are a risk factor for developing breast cancer.
Overweight or obesity in postmenopausal women is a risk factor for breast cancer.
Menopausal hormone therapy that involves estrogen and progesterone for more than five years can raise risk for breast cancer. Certain birth control pills also have been found to raise breast cancer risk.
A 2020 study estimated that combined estrogen-progesterone therapy would mean nine additional breast cancer cases per 10,000 for younger individuals and an additional 36 per 10,000 for older individuals per year. The study showed taking estrogen and progesterone for more than five years results in a significant increase in breast cancer risk.
Starting menstrual periods before age 12 and starting menopause after age 55 expose women to hormones longer, resulting in an increased risk for breast cancer.
A first pregnancy after age 30, not breastfeeding and never having a full-term pregnancy can raise breast cancer risk.
The more alcohol you drink, the higher your risk for breast cancer. The body breaks down alcohol into acetaldehyde, which damages your DNA and prevents your body from repairing the damage. Damaged DNA can allow a cell to grow out of control into cancer cells and create a tumor.
There are risk factors for breast cancer you can control, and some you can’t. Risks outside your control include:
Risks that you have some control over include: