I am talking about preventing cancer from a medical standpoint, which means not only preventing the onset but also preventing further stages of cancer. So if you catch breast cancer in stage one you therefore prevented stages 2-4.
We're talking about a very complex disease process in very simplistic terms. There are many factors that can cause breast cancer to occur in both the presence and absence of the breast cancer gene, and one of those is drinking alcohol. Another one is taking estrogen-progesterone hormonal birth control pills.
Beyond all of this, encouraging women to drink alcohol to supposedly "prevent" breast cancer is moronic. I know a woman who died of lung cancer who never smoked. That doesn't mean that cigarette companies should put lung cancer ribbons on their cigarettes in order to encourage people to "contribute towards lung cancer awareness".
