>>12886926Being "a problem" is pretty vague. The main risks of alcohol are from short-term intoxication. There are also liver effects caused by habitual overuse. Basically the liver can't keep up with your drinking, starts converting the alcohol it can't filter out into fats, and that fat builds up in the liver until it causes permanent damage.
Between those two, there's lots of fairly vague effects on long-term health that can be established only with long-term study and large sample sizes. These don't do a great job of establishing mechanism or causality. Those are the ones that we spend the most time on, but compared to the two biggies (severe intoxication and permanent liver damage) they're really pretty minor.
Basically, don't drink so much you pass out, black out, or crash your car, ever. And don't drink so regularly that you spend more time drunk than sober. If you do both of those, you're avoiding all the really serious risks, and what you're left with is "X% more likely to develop Y" type effects.
