In labeling food products, marketers walk a fine line between promoting the product and truth in content. Phrases such as "low sodium," "fat-free," "no sugar added," and "light" may give the impression that a food is healthful, but not reveal the entire truth. How often do you read package labels and make purchases based on their content? On your next trip to the grocery store, examine various labels that have one of the words identified earlier in this question and compare it to other brands. Does it actually contain less than a competing brand?