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High soluble fibre may help you fight metabolic disease: Study

Eat a wide variety of high fibre foods like nuts, lentils, oats, peas and fruits to reduce fat and stay away from metabolic diseases says a new study.

health-and-fitness Updated: Nov 02, 2015 18:02 IST

Consumption of foods with high soluble fibre content could also combat the of metabolic disease.
Consumption of foods with high soluble fibre content could also combat the of metabolic disease. (Shutterstock)

A new study suggests that food rich in soluble fibre such as oat bran, nuts, lentils, peas, and some fruits and vegetables can help you lose fat and prevent metabolic disease.

Researchers at Georgia State University in US found that a diet missing soluble fibre promotes inflammation in the intestines and poor gut health, leading to weight gain in mice.

But incorporating soluble fibre back into the diet can restore gut health. The study examined the effects of diets varying in amounts of soluble and insoluble fibres, protein and fat on the structure of the intestines, fat accumulation and weight gain in mice.

They found that mice on a diet lacking soluble fibre gained weight and had more fat compared with mice on a diet that included soluble fibre.

Read:Struggling with obesity? Blame your grandfather, not DNA

The intestines of mice on the soluble fibre-deficient diet were also shorter and had thinner walls. These structural changes were observed within two days after starting the diet.

The researchers also found that introducing soluble fibre into the diet restored gut structure. Supplementing with soluble fibre inulin restored the intestinal structure in mice on the soluble fibre-deficient diet.

Mice that received cellulose, an insoluble fibre, however, did not show improvements.

Moreover, in mice fed a high-fat diet, switching the type of fibre from insoluble to soluble protected the mice from the fat accumulation and intestinal wasting that occurs with excess fat consumption.

Include these foods to your diet to meet daily fibre goal. (Shutterstock)

The data suggest a difference in health benefits between soluble and insoluble dietary fibres, the researchers said.

Improvements in gut structure with soluble fibre were due to changes in the gut microbiota and the gut microbiota’s production of molecules called short chain fatty acids, which are used as fuel by intestinal cells and have anti-inflammatory properties, researchers said.

Mice consuming a soluble fibre-deficient diet had lower levels of short chain fatty acids, and introducing soluble fibre into their diet boosted their levels.

Supplementing the soluble fibre-deficient diet with short chain fatty acids had similar effects as inulin supplementation, although not to the same extent.

Inulin supplementation increased the size of the intestines in normal mice but not in mice with no gut microbiota, supporting that the gut microbiota is involved in the intestinal health effects of soluble fibre.

Read: Another excuse to join the gym: Lose weight to avoid cancer

According to the researchers, the data support that soluble fibre promotes gut health by encouraging the gut microbiota to produce short chain fatty acids.

“If our observations were to prove applicable to humans, it would suggest that encouraging consumption of foods with high soluble fibre content may be a means to combat the epidemic of metabolic disease,” the researchers said.

The study was published in the American Journal of Physiology - Gastrointestinal and Liver Physiology.

First Published: Nov 02, 2015 18:02 IST

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