ok, it appears to be relying on self reporting of alcoholic consumption, which in my estimation would be notoriously innaccurate with the real figure likely to be much higher.
Yep cigarettes and alcohol, take what the patient says and double it, that's what we're taught
another point, that's three years worth of having 25 drinks a week. How many people would have 25 drinks a week for men, and 20 a week for women, every week three years solid? Anyone who does is likely to have a real problem.
Fairly common, and amazing how many people hide it really well

now is it really the drinking or is it that perhaps heavy drinkers are more likely to say be smokers or not exercise or have really poor diets? Perhaps a vitamin deficiency? I'd have to checkt he study for that one.
Drinkers tend to have thiamine deficiency which can cause... Brain damage
sweet, 25 glasses a wine a week for me? Or 25 beers? I rarely have that much in a week. I'll usually have one big one on the weekend and that's it.

another point.....this doesn't distinguish between binging and continuous heavy drinking every day. Perhaps they have different effects.
Yeo, binge drinkers screw their liver quickly, and chronic drinkers get Korsakoff's (alcoholic dementia). Beer drinkers are more likely to get brain damage than spirit drinkers.
again, I would imagine that light drinkers behaviour is probably better. Even if they try to allow for that can it all really be allowed for?
nope
this was no before and after study. Who knows, perhaps they would have been like this beforehand.

what it indicates is that further research on this area needs to be done. Yes, it does appear that heavy drinking can cause brain damage, but.....I have detailed a few buts here

As said below it's a bag of poo


I was raised by a toothless, bearded hag,
I was schooled with a strap right across my back