I'm convinced women drink as much as men.
The thing I observed though, is the type of drink. In the case of wine: I see so many women frequently prefer whites, chardonnay, reisling, and zinfandel as opposed to dark reds. The alcohol content is the same.
So my theory is that maybe the hormonal difference between men and women may cause slight differences in taste preferences. I, myself, no how much I try to pull off being a girl, prefer red wine. Any thoughts?