Mari-Mann Herb Co Inc

You have heard that fructose causes fatty liver. That part is true. What is less known is that your gut gets the first attempt at clearing it, and that step can be changed.

Fructose is broken down by your gut and your liver. In excess, the liver converts it into new fat, and over time that becomes fatty liver disease. The usual advice is to cut the sugar.

A 2025 study in mice found a second lever: Researchers fed the animals the fibre inulin and used a labeled tracer to follow where the fructose went.

The fibre did not change how much fructose reached the gut. It did not change how the mouse itself processed sugar. It changed the bacteria.

Fed inulin, the gut microbiome broke fructose down in the small intestine before it could spill over to the liver. Same fructose in, far less reaching the liver. A key species behind this was Bacteroides acidifaciens, and the effect transferred through the microbiome alone.

In these mice, the result was less liver fat, better insulin sensitivity, and reduced fibrosis.

This is a mouse study. No human trial has tested it. Fibre is good for people for many reasons, but this specific mechanism, gut bacteria intercepting fructose before the liver sees it, has not been shown in humans.

Fatty liver is not only about how much sugar you eat. It is about which microbes meet that sugar first. The fibre is not feeding you. It is feeding the bacteria that clear your sugar.

Jung et al., Nature Metabolism, 2025

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• Berberine
• Shocking Increase in Childhood Anxiety
• Keto Diet and Endometrial Cancer
• Ouch! Help for Pulled Muscles

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