Having a drink after work can be a way to unwind and rejuvenate. But it’s not hazard-free: New research has found a link between alcohol and a substantially higher risk of several kinds of cancer.

Cancer researchers with the World Health Organization found a heightened cancer risk even among light to moderate drinkers — those who have up to two drinks a day. A standard, five-ounce serving of wine was associated with a 6% higher risk of developing breast cancer. About 15% of all new cancer cases in 2020 were found in light to moderate drinkers.

While alcohol use is often related to temporary stressors, the scientists said it’s important for people to understand that the negative consequences of consistent alcohol use can emerge slowly. That includes a heightened risk of cancer.

In addition to potential liver damage, the researchers noted that chronic alcohol consumption can have other effects. It causes cancer by impeding the proper repair of DNA, which carries genetic instructions for cells. Consistent alcohol use also disrupts hormone levels, raising the chances of getting breast cancer. Alcohol even raises the risk of head and neck cancer in smokers by facilitating the absorption of the cancer-causing substances in tobacco.

Scientists said the new findings are potentially useful in two areas. That includes better informing the public about the association between even light drinking and increased cancer risks. It also can be used to open a public policy discussion about including cancer-risk warnings on alcoholic beverage labels.

As the researchers note, the findings are also a cautionary tale: All drinking involves some risk.