Robert, forget that Yag stuff, that WILL kill you!
Shelley, The "Official" word on the question of alcohol is that statistically people do better if they don't drink. The exact percentage better is hard to get out of the Doctors. In my opinion live life as best you can. If a little beer or wine helps then don't worry.

If a LOT of beer or wine dosn't help then you have a problem.

(I expect some flack for that one). I believe it probably safer to avoid strong concentrations of alcohol.