After years of being told that red wine was good for heart health, more Americans appear to be heeding warnings that even moderate alcohol consumption can be unhealthy.

Gallup, which started tracking Americans' alcohol habits more than 80 years ago, says the drop in drinking rates coincides with Americans' growing concerns that even moderate drinking is unhealthy.

A new Gallup Poll shows the use of alcohol among American adults is at its lowest point in a nearly 90-year downward trend.