I gained about 40-50 lbs as an everyday drinker over a year. I averaged 12 tall cans of beer a day, which is 2500 calories. That is on top of another 2500 calories from food. The weight gain is so gradual I didn't notice it. However, I did notice the looks of concern when I saw people who I hadn't seen for a long time. My perception and self awareness was horribly distorted so I didn't see the bloated mess I had become.