While the blurb below relates to alcohol and breast cancer, the inter-actions of alcohol and estrogen is what I found of interest.
ALCOHOL AND BREAST CANCER Alcohol may effect the way estrogen is secreted and broken down. As I mentioned earlier,
estrogen in our bodies makes us absorb alcohol more readily and break it down less. At the same rate, alcohol affects how estrogen is secreted and broken down. Thus, by drinking alcohol your estrogen levels will increase significantly both pre-menopausally and post-menopausally. As a result, after you drink you get spurts of estrogen that can be as high as 300 percent within 30 minutes of consumption. This is similar to the spurt of estrogen just prior to ovulation and may be responsible for a breast cancer-promoting effect. In other words, there¹s one thing to have a constant amount of estrogen and occasionally have a rise before you ovulate, but if you get these rises in estrogen every time you drink, this may potentiate breast cancer.
ALCOHOL, BIRTH CONTROL AND HORMONE REPLACEMENT THERAPY Women taking birth control pills or Hormone Replacement Therapy (HRT) really need to be aware that not only will they absorb alcohol better but it will stay in their bodies longer. If you go back and look at the long-running Framingham study, which showed an increase in breast cancer by over 50 percent in the women who had just three drinks a week, you start to understand why, perhaps, breast cancer increased. That same study is used by many experts to scare off women from using estrogen replacement, as it showed an increase of breast cancer 41 percent in women who took estrogen. However, if you look at the study, this 41 percent increase was not found in women who did not consume alcohol. So, perhaps when they go around saying that estrogen replacement increases breast cancer, it may only occur if you drink. We know that estrogen increases after we drink, estrogen is linked to breast cancer and estrogen is linked to breast cancer more often with women who drink.
http://www.nysaes.cornell.edu/fst/faculty/acree/fs430/notes_thk/03wine&women.html