I never had trouble getting enough to eat in Europe, but the drink sizes were very stingy, especially juice, soda or water. I also noticed that everybody drank bottled water -- never tap water -- a practice that has unfortunately made it to these shores in recent years. I was told that the reason is they didn't have safe drinking water from a tap until fairly recently, and so were just in the habit of buying bottled water.
Remember the heat wave France had last year and all of the people who died? I remember thinking - probably 'cause all they drink is wine, coffee and maybe a thimble full of water or so a day. It's called DEHYDRATION, folks. When it's hot, you sweat more and you have to drink plenty of fluids.