New research, which was presented at the American Association for the Advancement of Science’s annual conference, has found that moderate drinking is linked to a longer life. Drinking about two glasses of wine or beer a day was linked to an 18% drop in a person’s risk of early death—an even stronger effect than the life-preserving practice of exercise, according to the researchers. The results came from the 90+ Study, a research project out of the University of California Irvine’s Institute for Memory Impairments and Neurological Disorders that examines the habits of people who live to at least 90.

Though the study has not yet been published in a scientific journal, it triggered a spate of booze-praising headlines. But can alcohol actually help you live longer? Researchers have gone back and forth on that question for years. Here’s what the research really says about alcohol and health.

The new study isn’t the first to link alcohol with a long life. A 2015 study of people with mild Alzheimer’s, for example, found that moderate drinkers were less likely to die during the study’s follow-up period than teetotalers.