Researchers conducting a small study found that women who tried chocolate breakfast bars with added fiber wound up eating the same and not feeling fuller over the course of a day than women who ate similar breakfast bars with no added fiber.
"In general, added fibers don't work across the board" when it comes to helping you feel fuller longer, says senior researcher Joanne Slavin, a registered dietitian and professor at the University of Minnesota in St. Paul.
Slavin goes on to say study results shouldn’t steer folks from fiber-added products; this valuable digestive nutrient is one often missing from regular diets.
To get real hunger-suppression benefits from fiber, look for products with "functional fiber" (i.e., naturally occuring) instead of fiber additives. Slavin says you can distinguish the difference on nutrition labels; products that boast over nine grams of fiber are likely fiber-enriched.
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