Looking at labels: you asked, we answered.(food wise)

Sixty-five percent of Americans surveyed by ACNielsen last year said they "mostly" understood nutrition information labels on the food products they buy. That leaves plenty of room for confusion. And judging by their letters to us, plenty of CONSUMER REPORTS readers are confused. Below are answers to questions you've asked about food labels. For a wealth of free food-label information from the federal government, go to www.cfsan.fda.gov.

Q A Tennessee reader questioned the "new math" for Sara Lee Heart Healthy Plus 100% Multi-Grain Bread: 80 calories for one slice, 150 for two.

A The numbers were rounded. The FDA requires that manufacturers round calories to the nearest 5-calorie multiple up to 50 calories, then to the nearest 10-calorie multiple. A representative of Sara Lee said a single slice of Heart Healthy actually has 77.05 calories.

Q Pennsylvania Dutchman Mushrooms were labeled "product of China." A Georgia reader asks, "What gives?"

A The FDA bans geographic names except in certain cases. For example, the name is OK if it's a trademark that has become so familiar it won't deceive buyers, if it's fanciful, or if it refers to a type or style of food. ("Texas toast" doesn't always hail from the Lone Star state.)

Q Campbell's regular Chicken Noodle Soup had even less fat than Campbell's Healthy Request Chicken Noodle. "I was surprised," said a Michigan reader.

A "Healthy" refers to more than fat. The FDA requires that a healthy food also be limited ...