Is There a Scientific Understanding of Drinking Alcohol?

When did the idea of drinking alcohol only in moderation emerge or has it been around for a really long time? I know so the idea of moderation is probably as old as alcohol itself if we could go back to the Neolithic period and actually you know understand what they were thinking and saying. It's very very prominent in classical culture in Greek and Roman culture which is a huge influence obviously on certainly on European and Anglo-American culture. And when scientific links began to be made about the relationship between alcoholism as the chemical and its impact on the body those became codified in the 1960s and 1970s I think.