The Journal of Women's Health has recently published a study indicating that drinking red wine in moderation may reduce one of the risk factors for breast cancer.
The study found that premenopausal women who drank 8 ounces of red wine every night for a month was shown to slightly lower levels of oestrogen (a hormone which fosters the growth of cancer cells) while slightly increasing testosterone levels.
More detail about the study and its findings is available here.