Ah you mean why is it on HN, not why was the study performed. That's fair. HN is wider than just technical things of course, and often includes major breaking

Ah you mean why is it on HN, not why was the study performed. That's fair. HN is wider than just technical things of course, and often includes major breaking news as well as some things of general interest. Given how common alcohol consumption is, that's probably how it ends up on the front page.