RESULTS The present study indicated that the efficacy of various fiber supplements on losing weight is variable .
Several mechanisms related to physicochemical properties of fibers such as solubility , fermentability and viscosity rates can be involved in their anti-obesity effects .
Dextrin , Mannan ( gum Arabic ) and pectin-rich fiber ( lupin kernel ) with no dietary interventions indicated a reduction in body weight and energy intake , while from clinical point of view , their effects were not considerable .
Overall , findings indicated that the efficacy of fiber supplements on obesity management is dependent on their contents and physicochemical properties .
It seems that fiber supplements with no weight-loss interventions did not have considerable antiobesity effects .
BACKGROUND Previous trials have reported beneficial effects of isolated and complex fiber supplements in obesity treatment .
However , recommending fiber supplements in obese subjects remains controversial .
To the best of our knowledge , no systematic review has up date d the data on the effects of fiber supplements on obesity since 2010 and the need exists for a systematic review on this topic .
Accordingly , a systematic review was undertaken to summarize the efficacy of different types of fiber supplements as a complementary treatment for weight management .
Safety and Efficacy of Glucomannan for Weight Loss in Overweight and Moderately Obese Adults
Background . Few safe and effective dietary supplements are available to promote weight loss . We evaluated the safety and efficacy of glucomannan , a water-soluble fiber supplement , for achieving weight loss in overweight and moderately obese individuals consuming self-selected diets . Methods . Participants were r and omly assigned to take 1.33 grams of glucomannan or identically looking placebo capsules with 236.6 mL ( 8 ounces ) of water one hour before breakfast , lunch , and dinner for 8 weeks . The primary efficacy outcome was change in body weight after 8 weeks . Other efficacy outcomes were changes in body composition , hunger/fullness , and lipid and glucose concentrations . Safety outcomes included gastrointestinal symptoms/tolerance and serum liver enzymes and creatinine levels . Results . A total of 53 participants ( 18–65 years of age ; BMI 25–35 kg/m2 ) were enrolled and r and omized . The two groups did not differ with respect to baseline characteristics and compliance with the study supplement . At 8 weeks , there was no significant difference between the glucomannan and placebo groups in amount of weight loss ( −.40 ± .06 and −.43 ± .07 , resp . ) or other efficacy outcomes or in any of the safety outcomes . Conclusions . Glucomannan supplements administered over 8 weeks were well tolerated but did not promote weight loss or significantly alter body composition , hunger/fullness , or lipid and glucose parameters . This trial is registered with NCT00613600
RESULTS The present study indicated that the efficacy of various fiber supplements on losing weight is variable .
Several mechanisms related to physicochemical properties of fibers such as solubility , fermentability and viscosity rates can be involved in their anti-obesity effects .
Dextrin , Mannan ( gum Arabic ) and pectin-rich fiber ( lupin kernel ) with no dietary interventions indicated a reduction in body weight and energy intake , while from clinical point of view , their effects were not considerable .
Overall , findings indicated that the efficacy of fiber supplements on obesity management is dependent on their contents and physicochemical properties .
It seems that fiber supplements with no weight-loss interventions did not have considerable antiobesity effects .
BACKGROUND Previous trials have reported beneficial effects of isolated and complex fiber supplements in obesity treatment .
However , recommending fiber supplements in obese subjects remains controversial .
To the best of our knowledge , no systematic review has up date d the data on the effects of fiber supplements on obesity since 2010 and the need exists for a systematic review on this topic .
Accordingly , a systematic review was undertaken to summarize the efficacy of different types of fiber supplements as a complementary treatment for weight management .