Fructooligosaccharides and daily thinking rhythms in mice on a high-fat diet
What it found
In mice fed a high-fat diet, fructooligosaccharides improved daily swings in learning and memory and restored related brain and gut signals.
This was an animal study.
What they found
Animal and lab studies
Daily cognitive deficits
Fructooligosaccharides improved the daily cognitive deficits in the high-fat diet mice, as measured by Barnes maze and novel object recognition tests.
Brain gene rhythms
The treatment restored the daily rises and falls of neuroplasticity genes (Bdnf, Psd95, Ngf) in the hippocampus of the mice.
Brain inflammation markers
It also restored daily patterns of neuroinflammatory markers (TNFα, IL-6, IL-1β) in the same brain region.
Gut bacteria and barrier
Fructooligosaccharides reshaped the daily dynamics of gut bacteria and improved gut barrier integrity, shown by daily Occludin expression.
Microbial metabolites
The treatment normalized the shifted daily patterns of microbial metabolites, especially short-chain fatty acids.
What the authors conclude
“FOS reinstated diurnal cognitive plasticity accompanied by normalization of SCFAs and gut-brain axis activity, highlighting a microbiota-targeted dietary approach for diurnal disruption in metabolic disorders.”
Also in their conclusions
- They conclude that FOS reinstated diurnal cognitive plasticity along with normalization of SCFAs and gut-brain axis activity.
- They highlight this as a microbiota-targeted dietary approach for diurnal disruption in metabolic disorders.
How it was done
High-fat diets disrupt the daily ups and downs of cognitive function, and the authors say nutritional ways to counter this are poorly explored.
They studied mice made obese by a high-fat diet. The mice were given fructooligosaccharides, and the researchers measured cognitive tests, brain genes and inflammatory markers, gut bacteria, gut barrier proteins, and short-chain fatty acids.
What it can’t tell you
- We summarised it from the abstract only.
- These are animal studies. They can't show what happens in people.
- The study cannot prove that the same effects would occur in humans eating a high-fat diet.
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 26 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error