When talking about cancer or any other life-threatening medical condition, numbers about risk, results, etc. can begin to blur for any patient. Having a tool like this to provide a clear visualization can help any woman and her doctor think through medical decisions more carefully. The website does note that the calculations this tool is based on ” calculations result from a computer simulation model, not a clinical trial.” Long-term validation studies of this tool are needed to confirm its accuracy.

But a woman facing important decisions about breast cancer risk and prevention needs the best information available now, and this tool appears to be a good way to help visualize the risks and benefits of treatment options and timing, in consultation with a physician. And being online, rather than in print, it is free and immediately available. Kudos to Standford for developing this important resource!