A recent study published in JAMA Network Open reveals that Black women with obesity and high leptin levels face an increased risk of early-onset breast cancer, particularly luminal A and triple-negative subtypes, compared to White women. This research highlights the urgent need to address racial disparities in breast cancer outcomes.
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The study, conducted at the University of South Alabama Mitchell Cancer Institute, examined clinical records of 1,085 patients between 2017 and 2022. Results showed that Black women with obesity had a higher frequency of breast cancer diagnosis compared to White patients. Black women also experienced a higher incidence of early-onset disease, with the risk further increasing among those with obesity.
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Researchers found that Black women, regardless of breast cancer diagnosis, had higher serum leptin levels compared to White women. These elevated leptin levels were associated with higher odds of luminal A disease and potentially linked to early-onset disease and triple-negative breast cancer diagnosis.
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The study authors noted, “Breast cancer is the most commonly diagnosed cancer and the second leading cause of cancer-related death among US women. It also exhibits significant race-associated health disparities.”
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The study’s limitations include its small, single-institution sample size and reliance on self-reported race. However, the findings highlight the complex interplay between obesity, leptin levels, and breast cancer risk in Black women. Future research should consider race-associated risk factors such as social exposures and economic stressors that may contribute to higher obesity rates in Black women and influence breast cancer disparities.
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See “Black Women With Obesity, Elevated Leptin Levels at Higher Risk for Breast Cancer” (July 31, 2024)
