What is the primary benefit of a preventative mastectomy?

The primary benefit of a preventative mastectomy is its significant reduction of breast cancer risk. This surgical procedure is typically considered for individuals who have a high genetic risk of developing breast cancer, such as those with mutations in the BRCA1 or BRCA2 genes. By removing breast tissue, the likelihood of cancer development in that area is markedly decreased, providing a proactive solution for women who wish to mitigate their risk.

While the other options touch on relevant aspects of a patient's experience and health, they do not directly address the main medical rationale behind the procedure. Increasing breast density is not a benefit associated with preventative mastectomy; in fact, the removal of breast tissue usually results in decreased density. Psychological support and improved self-esteem may be important considerations for some patients, but these are secondary effects and do not capture the primary clinical intention of the procedure, which is to reduce the risk of breast cancer substantially.