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 .
Effect of 6 weeks' consumption of β-glucan-rich oat products on cholesterol levels in mildly hypercholesterolaemic overweight adults.
Several regulatory bodies have approved a health cl aim on the cholesterol-lowering effects of oat β-glucan at levels of 3·0 g/d . The present study aim ed to test whether 1·5 g/d β-glucan provided as ready-to-eat oat flakes was as effective in lowering cholesterol as 3·0 g/d from oats porridge . A 6-week r and omised controlled trial was conducted in eighty-seven mildly hypercholesterolaemic ( ≥ 5 mmol/l and < 7·5 mmol/l ) men and women assigned to one of three diet arms ( 25 % energy ( E% ) protein ; 45 E% carbohydrate ; 30 E% fat , at energy requirements for weight maintenance ) : ( 1 ) minimal β-glucan ( control ) ; ( 2 ) low-dose oat β-glucan ( 1·5 g β-glucan ; oats low - OL ) or ( 3 ) higher dose oat β-glucan ( 3·0 g β-glucan ; oats high - OH ) . Changes in total cholesterol and LDL-cholesterol ( LDL-C ) from baseline were assessed using a linear mixed model and repeated- measures ANOVA , adjusted for weight change . Total cholesterol reduced significantly in all groups ( - 7·8 ( sd 13·8 ) % , - 7·2 ( sd 12·4 ) % and - 5·5 ( sd 9·3 ) % in the OH , OL and control groups ) , as did LDL-C ( - 8·4 ( sd 18·5 ) % , - 8·5 ( sd 18·5 ) % and - 5·5 ( sd 12·4 ) % in the OH , OL and control groups ) , but between-group differences were not significant . In responders only ( n 60 ) , β-glucan groups had higher reductions in LDL-C ( - 18·3 ( sd 11·1 ) % and - 18·1 ( sd 9·2 ) % in the OH and OL groups ) compared with controls ( - 11·7 ( sd 7·9 ) % ; P = 0·044 ) . Intakes of oat β-glucan were as effective at doses of 1·5 g/d compared with 3 g/d when provided in different food formats that delivered similar amounts of soluble β-glucan
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 .