Vitamin D Deficiency, Obesity and Breast Cancer Risk

Vitamin D plays a crucial role in bone health and has been associated with reduced risk of several cancers, including breast cancer. However, the relationship between vitamin D status, obesity, and breast cancer risk remains complex and poorly understood. Obesity is a well-established risk factor for breast cancer, particularly in postmenopausal women, and is also associated with lower vitamin D status due to sequestration in adipose tissue. Previous studies have examined vitamin D and breast cancer risk independently, but the interaction between vitamin D status, obesity, and breast cancer outcomes has not been comprehensively investigated. This significant knowledge gap will be addressed through a comprehensive multi-component study including: (1) a longitudinal study examining the relationship between vitamin D status, obesity markers, and breast cancer risk over time; (2) a pilot human study assessing vitamin D status and obesity, and (3) cell culture work to investigate the molecular mechanisms underlying the vitamin D-obesity-breast cancer relationship. This project will provide greater understanding of the complex interactions between vitamin D, obesity, and breast cancer risk. It addresses a significant knowledge gap in breast cancer prevention, by facilitating appropriate guidance on vitamin D status and obesity management for breast cancer risk reduction.