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Obesity and Breast Cancer: A Complex Relationship

  • Breast Cancer Surgery (J. Tchou, Section Editor)
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Abstract

As prevalence of obesity continues to rise in the United States, we are beginning to elucidate the complex role of obesity-associated chronic inflammation, endocrine dysfunction, and hormone production as a driver for increased breast cancer risk. Epidemiological data suggest that obesity (BMI > 30) is associated with increased breast cancer incidence, worse prognosis, and higher mortality rates. Mechanistically, obesity and excess fat mass represent a state of chronic inflammation, insulin resistance, adipokine imbalance, and increased estrogen signaling. This pro-tumorigenic environment stimulates cancer development through abnormal growth, proliferation, and survival of mammary tissue. Importantly, obesity is a modifiable risk factor; alterations in cell proliferation, apoptosis, circulating estrogen, and insulin sensitivity are observed in response to weight loss attainable through behavior modification including dietary and exercise changes.

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Correspondence to Victoria M. Gershuni.

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Gershuni, V.M., Ahima, R.S. & Tchou, J. Obesity and Breast Cancer: A Complex Relationship. Curr Surg Rep 4, 14 (2016). https://doi.org/10.1007/s40137-016-0134-5

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  • DOI: https://doi.org/10.1007/s40137-016-0134-5

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