I have a few hundred links in my Neuro bookmarks. I doubt I saved that one. I remembered the study because I was told when I was 15 years old to never drink due to my concussion history. When I read the article stating a single serving per day is tolerated by many, it stuck out as contrary to my previous understanding.

As the study said, "many" can tolerate a single serving per day.

I do not consume any alcohol. I can get a hang-over from a single glass of beer, at least that is what happened when I tried my first and last glass of beer at 21 years old. I used to have a hot toddy of half a shot of Drambuie (scotch and heather honey liquor) with water ( 20 % alcohol ) to relieve sinus congestion so I could sleep. I have not even had one of those in 30 years.