Fructooligosaccharides and daily brain function changes in mice on high-fat diets
What it found
In mice fed a high-fat diet, fructooligosaccharides improved daily swings in memory and thinking.
It also restored normal daily patterns of gut bacteria and brain chemicals.
What they found
Animal and lab studies
Memory and thinking rhythms
In mice made obese by a high-fat diet, fructooligosaccharides improved daily swings in memory and thinking. The animals performed better on maze and object tests across the day.
Brain gene rhythms
The ingredient restored normal daily patterns of genes linked to brain flexibility in the hippocampus of mice. It also brought back regular daily cycles of inflammation markers like TNFα, IL-6, and IL-1β.
Gut bacteria rhythms
Fructooligosaccharides changed the daily activity patterns of gut bacteria in the mice. It also strengthened the gut lining, measured by daily levels of a protein called Occludin.
Short-chain fatty acids
The treatment brought back normal daily patterns of short-chain fatty acids produced by gut bacteria in the mice. These are substances made when gut bacteria break down food.
What the authors conclude
- They suggest that fructooligosaccharides can restore daily brain function rhythms disrupted by a high-fat diet in mice.
- They point to the gut-brain connection and bacterial metabolites as key parts of how this works.
- The authors propose that targeting gut bacteria through diet may help with daily rhythm problems linked to metabolic conditions.
How it was done
A high-fat diet disrupts the natural daily rhythms of brain function. Scientists wanted to see if dietary approaches could reduce this disruption.
Researchers fed mice a high-fat diet to make them obese. They then gave the mice fructooligosaccharides. They tested the animals' memory and thinking at different times of day using maze and object recognition tasks.
What it can’t tell you
- We summarised it from the abstract only.
- These results come from mice, so they cannot show what happens in people eating fructooligosaccharides.
- Scientists do not yet know if the same improvements in daily brain rhythms would occur in humans.
Who paid
- Authors work at
- Northwest A&F University, China
The paper
- Title
- Fructo-Oligosaccharides Restore High-Fat Diet-Disrupted Diurnal Fluctuations in Cognitive Function in Mice via the Gut-Brain Axis
- Type
- Study
- Evidence
- Animals and lab studies
- Summarised from
- Abstract only
- Cite
- Zhao Z, Zhao Y, Dai S, et al (2025). Fructo-Oligosaccharides Restore High-Fat Diet-Disrupted Diurnal Fluctuations in Cognitive Function in Mice via the Gut-Brain Axis. Journal of agricultural and food chemistry. doi:10.1021/acs.jafc.5c10321PubMed 41201833DOI
Summary written 30 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error