I did notice that it said this?? ...However, according to Bernstein and colleagues, few studies have investigated the effects of aspirin use on the risk of certain breast cancer subtypes, and it has been unclear as to whether low-dose aspirin, or "baby" aspirin, protects against breast cancer.
It would be so fantastic if this comes to be, I'm all for anything that works, unfortunately the problem is there are so many things that 'they' say reduce the risk but are all minority studies. Hopefully one day they'll find the answer but seems to be a very slow process.