As a woman who has at a higher risk for getting breast cancer, I bought her book and followed her work and was empowered by it.
She also was unique in being a medical doctor who wrote about things like how diet and lifestyle affected cancer risk, back when other medical docs were still denying the fact that these factors could be relevant.
She taught women like me that we had a lot more control over our health journey than many docs wanted to give us, and to seek out doctors who would consider us their partners instead of their inferiors.