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Are 100-calorie packs really your best bet for healthy snacking? Dietitians weigh in.

Consumers are turning to 100-calorie snack packs -- of crackers, cookies, chips, and more -- in record numbers. Obviously, many see these convenient little bags as a great way to control calories and keep them from polishing off whole bags of less-than-healthy snacks.

But is this new food category -- which has gone from $0 to $150 million in sales in less than two years -- really the best bet for those trying to eat healthy snacks and control weight? WebMD put the question to several dietitians.

How Healthy Are 100-Calorie Snack Packs?

The 100-calorie packs work best when it comes to foods we should enjoy in limited amounts, says health columnist Carolyn O'Neil, RD.

"A snack like nuts is perfect for 100-calorie packs, because lots of folks tend to mindlessly eat larger servings," says O'Neil. "And even though nuts are nutrient-rich, they could contribute too many calories if the packs were not portion-controlled."

That goes as well for sweets, which are a weakness for many dieters. Sweet treats like 100-calorie ice cream bars and cookies are a great way to have your cake and eat it, too -- as long as you can stop at one.

"I support the 100-calorie packaging to help with portion control, but if consumers think it is fine to eat more than one, it negates the benefit," says Milton Stokes, MPH, RD, chief dietitian at St. Barnabus Hospital in Bronx, New York.

Stokes says that packaging items in smaller containers can help control mindless overeating.

"Studies show the larger the container, the more people eat," says Stokes. "So by reducing the size of plates, bags, and containers, it should help us reduce the amount we eat."

American Dietetic Association spokeswoman Marisa Moore, RD, likes 100-calorie products for their portion control, convenience, and ability to satisfy a sweet tooth. But because many of these snacks lack fiber, she says, they won't stave off hunger for long.

"The 100-calorie snacks lack staying power, and as a result can lead to premature hunger and a higher calorie intake in the end," she says.

She'd rather see people choose snacks that provide needed nutrients while taming hunger. For example, she says, "in only 160 calories, a serving of almonds is satisfying and provides heart-healthy fats, fiber, and calcium."

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