Breast Cancer: Causes and Risk Factors You Should Know

Understanding Breast Cancer

Breast cancer occurs when abnormal cell growth forms a mass or lump in the breast. These cancerous cells divide faster than normal cells, and over time, they can spread to the lymph nodes and other areas of the body. Most breast cancers start in the milk ducts or glandular tissue but can also arise in other breast cells.

What Causes Breast Cancer?

The exact causes of breast cancer are still unclear, but hormonal, genetic, lifestyle, and environmental factors can influence its development. While some individuals with no apparent risk factors develop breast cancer, others with multiple risk factors never do. The interaction between genetics and external factors plays a significant role.

Key Risk Factors for Breast Cancer

While having one or more risk factors does not guarantee a breast cancer diagnosis, being aware of them can help with early detection and prevention.

1. Biological and Genetic Risk Factors

• Gender: Women are significantly more likely to develop breast cancer than men.
• Age: The risk increases as you grow older.
• Personal History: If you've had lobular carcinoma in situ (LCIS) or atypical hyperplasia, your risk is higher.
• Previous Breast Cancer: A history of breast cancer in one breast increases the risk in the other.
• Genetic Mutations: Inherited mutations in genes like BRCA1 and BRCA2 elevate risk, though only 5–10% of cases are genetic.
• Family History: A strong family history of breast cancer may indicate a higher likelihood of developing the disease.
• Radiation Exposure: Previous radiation therapy to the chest as a child or young adult increases risk.

2. Hormonal and Reproductive Risk Factors

• Early Menstruation: Starting your period before age 12 raises the risk.
• Late Menopause: Entering menopause later in life increases risk.
• Pregnancy History: Having a first child after age 30 or never being pregnant may contribute to risk.
• Postmenopausal Hormone Therapy: Long-term estrogen and progesterone therapy can increase risk, though the risk declines after stopping treatment.

3. Lifestyle and Environmental Risk Factors

• Obesity: Excess body weight after menopause raises estrogen levels, increasing risk.
• Alcohol Consumption: Regular alcohol intake correlates with higher risk.
• Sedentary Lifestyle: Lack of exercise may contribute to hormone-related breast cancer.
• Dietary Factors: A diet high in processed foods and unhealthy fats may contribute to risk.

Lowering Your Breast Cancer Risk

While some risk factors are beyond your control, others—like diet, physical activity, and lifestyle choices—can be managed to reduce risk. Consider adopting healthy habits such as maintaining a balanced diet, limiting alcohol intake, and getting regular exercise.

‍Early Detection and Screening

Regular mammograms, self-examinations, and clinical screenings can increase the chances of early detection, leading to better treatment outcomes.

‍Find Expert Breast Cancer Care at BASS Cancer Center

If you're concerned about breast cancer risk factors or need screening and specialist care, BASS Cancer Center in Walnut Creek provides comprehensive breast health services. Our team of expert breast surgeons is here to guide you through screenings, diagnosis, and treatment.

• Learn more about our specialized care at the BASS Cancer Center Homepage.
• Contact our Breast Surgeons to schedule a consultation today and take charge of your breast health.