A lso among the cereals that Consumer Reports rates "fair," at best, were Kellogg's Honey Smacks and Post's Golden Crisp cereal. Both of those choices have more than 50 percent sugar per serving size.

Two cereals — Post Golden Crisp and Kellogg’s Honey Smacks — contain more than 50 percent sugar by weight.

According to a report from the Environmental Working Group, many popular kids’ cereals are more than 50% sugar by weight ...