What effect do high estrogen levels have on breast tissue?

High estrogen levels are known to have a significant impact on breast tissue, and the correct response highlights that they can increase both breast density and the potential risk of breast cancer. Estrogen is a key hormone in the development and maintenance of breast tissue, and higher levels can lead to the proliferation of breast cells. This increased cellular growth can contribute to greater breast density, which is a known risk factor for breast cancer.

Studies have shown that denser breast tissue makes it more challenging for mammograms to detect abnormalities, which can potentially conceal tumors. Additionally, the hormonal environment driven by elevated estrogen levels can contribute to the development of malignancies in the breast. Therefore, recognizing the relationship between high estrogen levels, breast density, and the associated risks is crucial for understanding women's health and managing breast cancer risks effectively.

In this context, the other options do not accurately reflect the established understanding of the effects of estrogen on breast tissue.