Estrogen is one of the most important hormones in a woman’s body. It promotes secondary sex characteristics, accelerates metabolism, and increases bone formation. Unfortunately, estrogen also stimulates the growth of more than half of all breast cancer cases.
A recent study at the University of Houston has shown alcohol enhances the actions of estrogen in driving the growth of breast cancer cells and diminishes the effects of the cancer drug Tamoxifen on blocking estrogen by increasing the levels of a cancer-causing gene called BRAF.”
They found that alcohol inappropriately promotes sustained expression of BRAF, even in the absence of estrogen, thereby mimicking or enhancing the effects of estrogen in increasing the risk of breast cancer. Another key finding was that alcohol weakened Tamoxifen’s ability to suppress the rapid growth of cancer cells.