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Know Your Risk: Factors that Increase the Likelihood of Breast Cancer

Published July 6th, 2023 by Great Lakes Medical Imaging

Breast cancer is the most common cancer among women worldwide, affecting one in eight women throughout their lifetime (Breastcancer.org, 2021). Multiple factors can influence an individual's risk of developing this disease. Recognizing these risk factors can empower you to take proactive steps in managing your health.

The Impact of Genetics

Certain inherited genes, particularly BRCA1 and BRCA2, can significantly increase a woman's risk of developing both breast and ovarian cancer (American Cancer Society, 2021). These genetic mutations account for about 5% to 10% of all breast cancers (National Cancer Institute, 2021). However, the majority of breast cancers are sporadic, meaning they occur in women without a family history of the disease.

Age, Gender, and Family History

Your age and gender can also influence your breast cancer risk. As you age, your risk of developing breast cancer increases. Additionally, while men can develop breast cancer, the condition is about 100 times less common in men than in women (Centers for Disease Control and Prevention, 2021). Having a family history of breast cancer, especially in a first-degree relative (mother, sister, daughter), can also increase your risk (National Cancer Institute, 2021).

Hormonal and Reproductive Factors

Certain reproductive factors can affect your breast cancer risk. These include early menstruation (before age 12), late menopause (after age 55), and having a first child after age 30 or never giving birth (American Cancer Society, 2021). Each of these factors increases the length of time a woman's body is exposed to estrogen, which can promote the growth of certain types of breast cancer.

Lifestyle Factors

Your lifestyle choices can significantly impact your breast cancer risk. Regular physical activity and maintaining a healthy weight can help reduce your risk, while excessive alcohol consumption can increase your risk (Mayo Clinic, 2021). Long-term use and high doses of hormone replacement therapy (HRT) during menopause can also increase a woman's risk of developing breast cancer (Mayo Clinic, 2021).

Regular Screening: Your Best Defense

Regular breast cancer screening, including mammograms, is crucial, especially for those at a higher risk. Screening can detect breast cancer early when it is most treatable (Centers for Disease Control and Prevention, 2021).

Understanding these risk factors allows you to better manage your health and take proactive steps to reduce your risk. Lifestyle modifications, regular screenings, and, in some cases, genetic counseling can all contribute to better breast health.

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