The Guardian, Scientists Discover Secret That Keeps French Slim:
"Scientists have another solution for the notorious "French paradox" - the riddle of how a nation of alcohol-quaffing, croissant-munching gourmands stays healthy and slim, while a disproportionate number of health-obsessed Americans are obese and at cardiovascular risk.""The answer, after methodical study of brasseries, eateries, pizza parlours, Chinese restaurants and Hard Rock cafes in both countries, is simple: the French eat less of everything. And they eat less because they are served smaller portions."
Duh.
[via Kottke]