Fiber and glycemia in type 2 diabetes

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Information about Fiber and glycemia in type 2 diabetes
Health & Medicine

Published on January 31, 2012

Author: pronutritionist

Source: slideshare.net

Description

This meta-analysis of randomized trials shows that increasing fiber intake has rather clear effect on fasting plasma glucose whereas the effect on HbA1c seems to be less profound

Post R et al . Dietary Fiber for the Treatment of Type 2 Diabetes Mellitus: A Meta-Analysis J Am Board Fam Med 2011; 25:16-23 http://twitter.com/pronutritionist Page

Pronutritionist’s background High intake of fiber is linked to improved cardiovascular outcomes in prospective cohort trials ( Mente et al . 2009) Current dietary guidelines emphasize the role of dietary fiber in the treatment of type diabetes ( American diabetes association , 2008) Exact magnitude of the effect of increased fiber intake, in the context of stable carbohydrate, fat and protein intake, is not known Page http://twitter.com/pronutritionist Page Post R et al. J Nutr. 2011 Dec;141(12):2180-5

High intake of fiber is linked to improved cardiovascular outcomes in prospective cohort trials ( Mente et al . 2009)

Current dietary guidelines emphasize the role of dietary fiber in the treatment of type diabetes ( American diabetes association , 2008)

Exact magnitude of the effect of increased fiber intake, in the context of stable carbohydrate, fat and protein intake, is not known

Methods (patients) A metal-analysis of controlled randomized trials Primary outcomes: Fasting glucose HbA1c Participants: Type 2 diabetics 15 trials included On average, observed difference in fiber intake was 18,3 grams/day (40 grams per day) Follow up: 3-12 weeks Some trials used fiber supplements, some changed quality of bread or cereals Both trials using soluble and in-soluble fiber were used http://twitter.com/pronutritionist Page Post R et al. J Nutr. 2011 Dec;141(12):2180-5

A metal-analysis of controlled randomized trials

Primary outcomes:

Fasting glucose

HbA1c

Participants: Type 2 diabetics

15 trials included

On average, observed difference in fiber intake was 18,3 grams/day (40 grams per day)

Follow up: 3-12 weeks

Some trials used fiber supplements, some changed quality of bread or cereals

Both trials using soluble and in-soluble fiber were used

Results http://twitter.com/pronutritionist Page 0,85 mmol/l 0,26 % Fasting blood glucose HbA1c Effect of increased fiber intake (18,3 g/d) vs placebo in T2D Post R et al. J Nutr. 2011 Dec;141(12):2180-5

Pronutritionist’s discussion This is the first meta-analysis to show the effect of increased fiber intake in the control of type 2 diabetes in randomized setting The trials included were short. None of trials lasted more than 3 months. More long term data is needed The meta-analysis supports the benefits of proposed high fiber intake in the current diabetes guidelines If a diabetic patient is not able to increase use of vegetables, fruit and whole grain, supplementation of fiber is justified according to this meta-analysis It will be interesting to see if novel approaches to control blood glucose will deliver similar effects, such as meal-time or bed-time vinegar intake ( Liatis et al . 2010) http://twitter.com/pronutritionist Page Post R et al. J Nutr. 2011 Dec;141(12):2180-5

This is the first meta-analysis to show the effect of increased fiber intake in the control of type 2 diabetes in randomized setting

The trials included were short. None of trials lasted more than 3 months. More long term data is needed

The meta-analysis supports the benefits of proposed high fiber intake in the current diabetes guidelines

If a diabetic patient is not able to increase use of vegetables, fruit and whole grain, supplementation of fiber is justified according to this meta-analysis

It will be interesting to see if novel approaches to control blood glucose will deliver similar effects, such as meal-time or bed-time vinegar intake ( Liatis et al . 2010)

Please read the whole paper at J Am Board Fam Med 2011; 25:16-23 http://twitter.com/pronutritionist Page

31/01/12 http://twitter.com/pronutritionist http://www.facebook.com/pronutritionist http://www.pronutritionist.net Reijo Laatikainen, Authorized Nutritionist, MBA http://twitter.com/pronutritionist Page Post R et al. J Nutr. 2011 Dec;141(12):2180-5

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