One question I have about this paper is that as far as I can tell they don't seem to control for obesity. Drinking is often correlated with increased weight, an

One question I have about this paper is that as far as I can tell they don't seem to control for obesity. Drinking is often correlated with increased weight, and fatness causes many of the problems attributed to alcohol. I wonder how much of negative health issues found in this paper could be offset by staying fit and keeping weight under control? That said, it seems to be quite a rigorous paper in general and it's made me think about how much I should be drinking.