Is it OK to drink alcohol if you have breast cancer? Alcohol can increase levels of estrogen and other hormones associated with hormone-receptor-positive breast cancer. Alcohol also may increase breast cancer risk by damaging DNA in cells. Compared to women who don’t drink at all, women who have three alcoholic drinks per week have a 15% higher risk of breast cancer.
How Much Does alcohol increase breast cancer risk? Moderate alcohol consumption has been linked to an approximate 30-50% increased risk in breast cancer. Case-control and cohort studies have consistently observed this modest increase.
Does drinking alcohol cause breast cancer recurrence? Consuming three to four alcoholic drinks or more per week after a breast cancer diagnosis may increase risk of breast cancer recurrence, particularly among postmenopausal and overweight/obese women, yet the cardioprotective effects of alcohol on non–breast cancer death were suggested.
Does quitting drinking Reduce breast cancer risk? In general, these studies have found that stopping alcohol consumption is not associated with immediate reductions in cancer risk. The cancer risks eventually decline, although it may take years for the risks of cancer to return to those of never drinkers.