Consumer Reports found two cereals, Post Golden Crisp and Kellogg's Honey Smacks, that are more than 50% sugar and nine which are at least 40% sugar. Some 23 of the top 27 cereals marketed to children rated only "Good" or "Fair" for nutrition. Consumer Reports notes there is at least as much sugar in a serving of Kellogg's Honey Smacks and 10 other rated cereals as there is in a glazed doughnut from Dunkin' Donuts, which contains 12g.
The article, which appears in the November issue of Consumer Reports, also notes that several cereals sold in the U.S. have more sugar and sodium than the same brands sold overseas.