There are pretty much 2 options for preventing breast cancer in Ashkenazi Jews: http://www.cancer.org/cancer/breastc...cer-prevention
Surgery (mastectomy) or chemoprevention which involves taking drugs like Tamoxifen.
Having relatives who've taken Tamoxifen I can tell you that in addition to these side effects they've also been linked with night sweats (Which are fucking awful), vivid and terrifying dreams, fatigue and nausea.
So you can either remove your breasts (Which have a 97% success rate at preventing breast cancer in such at-risk populations) or take drugs that basically suck the estrogen out of your body (Yes, I know that's not exactly what they do) and reduce quality of life in other ways and still not be totally safe.
Obviously you're going to want a second opinion before a mastectomy, but bilateral mastectomy is the most effective way to prevent breast cancer for these women.
---------- Post added 2012-11-25 at 05:46 AM ----------
I know of no children who get braces where it's not thought they'll improve quality of life.
Crossbites, underbites and overbites lead to being unable to fully close the mouth, increased wear and tear on teeth and more trips to the dentist.
---------- Post added 2012-11-25 at 05:48 AM ----------
I'm not ignoring scientific research.
---------- Post added 2012-11-25 at 05:50 AM ----------
Because the cited benefits of a circumcision involve a reduction in penile cancer if you have phimosis and the reduction in STD contraction is fixed by wearing a condom.