National Geographic : 2004 Aug
PORTION SIZES BASED ON RECOMMENDATIONS FROM THE AMERICAN DIETETIC ASSOCIATION AND WEIGHT WATCHERS INTERNATIONAL; 1900 CHOCOLATEBARPHOTOGRAPH:HERSHEYCOMMUNITY ARCHIVES; ALL OTHERPHOTOGRAPHSBYREBECCAHALE When was the last time you ate a burrito the size of a bar of soap? Most of us are clueless about what a single serving should be, which is why nutritionists suggest using the objects pictured above as a guide. Portions have exploded since the '70s. Supersized servings of french fries and sodas are often two to five times larger than when they were Introduced. Jumbo portions may appeal to our pocketbooks, but they assault our waistlines.