Lite Beer has 5 grams Carbs and 100 calories a Can and is about 5% Alcohol the rest is Water...... I Don't have a Weight Problem... I am Never Hungary and Eat like a King...... I've been on Atkins for 8 Years.... Pre 2000 I was on the Food Pyramid..... I weighed 250# and drank a case(24 Cans) of Coors Lite a Day.... You would Never Know it if you didn't Smell the Beer...... After the First Year of Atkins Still drinking a Case of Lite Coors a Day I went down to 210# and Stayed There..... 1 1/2 Years Ago I Quit the Beer for the Hell of it and went real fast down to 190#s and Stayed There.... As far as the Brain Mass Goes I suggest that You Stay Off the Booze......
5g carbs x 4 calories = 20 calories
~11.4 g alcohol x 7 calories = 80 calories
The alcohol is the majority of the calories, its not the carbs. If you drank a case of alcohol per day you for sure have had a loss in brain mass. The good news is that it is partially reversible if you abstain from alcohol.