I had a some really bad reactions to alcohol early in my recovery so I know it affects me, but non-alcoholic beer has caused me no problems that I can identify brain-wise.

In England the best ones I can find are the German white beers, which seem to have some really good and realistic non-alcoholic versions.

It helped ween me off the stuff since I too was an 'avid drinker' before my injury. I've stopped drinking it now because I've decided that since I can't drink alcohol but I should be exercising a lot then I might as well try and get myself six-pack abs for the first time in my life! So that is now one of my missions. So far it's progressing very slowly.....