I wear a fitness tracker every day, and it is extremely clear on which days I've consumed alcohol because my resting heart rate spikes by at least 5% the day afterwards. And I'm a one-beer drinker. It actually took tracking my entire food intake for about two months to figure out what was causing it.

Last time I mentioned this on HN, people here have claimed that the effect was psychosomatic.

I think people grossly underestimate the negative health effects of alcohol, and I doubt any amount of research will really change peoples minds.