This study was inadequately powered to assess long-term safety of alcohol.
The U.S. National Institutes of Health has withdrawn funding for the Moderate Alcohol and Cardiovascular Health Trial (MACH15) because of a possible pro-alcohol primary endpoint and inadequate attention to alcohol hazards like some cancers. Industry funding was also solicited by NIH employees in violation of policy. Bravo, for NIH's willingness to stop supporting this study!
PositiveTip: Good, solid studies leave little question there is any safe level of alcohol use.