Enticing packaging and nutrition labels with words you can hardly pronounce can make it hard to make healthy choices in the supermarket.

Janis Jibrin, who is a registered dietician and author of Good Housekeeping's new book, "The Supermarket Diet," has some tips on how to buy the right foods.

"Fiber is very important for people trying to lose weight because it makes you feel fuller longer. Cereals vary greatly in the amount of fiber they contain. So the rule of thumb is per 100 calories, you want at least 5 grams of fiber and 5 grams of sugar or less," Jibrin said.

Jibrin also recommends whole-grain foods, but said that it is not always easy to tell whether you are buying the real thing.

Find out more about the Supermarket diet at http://www.thekansascitychannel.com.