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 .
The impact of oligofructose on stimulation of gut hormones, appetite regulation and adiposity.
OBJECTIVE To investigate the effect of nutrient stimulation of gut hormones by oligofructose supplementation on appetite , energy intake ( EI ) , body weight ( BW ) and adiposity in overweight and obese volunteers . METHODS In a parallel , single-blind and placebo-controlled study , 22 healthy overweight and obese volunteers were r and omly allocated to receive 30 g day(-1 ) oligofructose or cellulose for 6 weeks following a 2-week run-in . Subjective appetite and side effect scores , breath hydrogen , serum short chain fatty acids ( SCFAs ) , plasma gut hormones , glucose and insulin concentrations , EI , BW and adiposity were quantified at baseline and post-supplementation . RESULTS Oligofructose increased breath hydrogen ( P < 0.0001 ) , late acetate concentrations ( P = 0.024 ) , tended to increase total area under the curve (tAUC)420 mins peptide YY ( PYY ) ( P = 0.056 ) and reduced tAUC450 mins hunger ( P = 0.034 ) and motivation to eat ( P = 0.013 ) when compared with cellulose . However , there was no significant difference between the groups in other parameters although within group analyses showed an increase in glucagon-like peptide 1 ( GLP-1 ) ( P = 0.006 ) in the cellulose group and a decrease in EI during ad libitum meal in both groups . CONCLUSIONS Oligofructose increased plasma PYY concentrations and suppressed appetite , while cellulose increased GLP-1 concentrations . EI decreased in both groups . However , these positive effects did not translate into changes in BW or adiposity
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 .