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Gut cells may measure hunger by how watery their insides become

Phys · · 666 words · By RIKEN
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What to know about Gut cells may measure hunger by how watery their insides become

Researchers at the RIKEN Center for Biosystems Dynamics Research discovered that gut cell turnover in fruit flies is influenced by the viscosity of the cytoplasm rather than specific nutrient signaling pathways. This process, termed 'viscosatiety,' suggests that cells may measure hunger based on how fluid or thick their internal environment becomes.

Propaganda risk 0%
Claims checked 11
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center80%
Right20%

5 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Gut cells may measure hunger by how watery their insides become Sadie Harley Scientific Editor Robert Egan Senior Editor Researchers led by Sa Kan Yoo at the RIKEN Center for Biosystems Dynamics Research (BDR) in Japan have discovered that the natural…

Why it matters

They found that gut cells were replaced more frequently when nutrient levels were low and the insides of gut cells were fluid and watery.

Common ground

The finding, published in Proceedings of the National Academy of Sciences, goes against traditional ideas in nutrient biology, which hold that nutrient sensing relies on biological signaling pathways activated by specific nutrients.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers at the RIKEN Center for Biosystems Dynamics Research discovered that gut cell turnover in fruit flies is influenced by the viscosity of the cytoplasm rather than specific nutrient signaling pathways. This process, termed 'viscosatiety,' suggests that cells may measure hunger based on how fluid or thick their internal environment becomes.

open_in_new Read the original article: https://phys.org/news/2026-08-gut-cells-hunger-watery-insides.html

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0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 11 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 7
help Insufficient Evidence 2
verified Verified By Reference 1
schedule Pending 1
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Claim 1: “Researchers led by Sa Kan Yoo at the RIKEN Center for Biosystems Dynamics Research (BDR) in Japan have discovered that the natural turnover of gut cells in fruit flies depends on how much food the flies get, rather than on any specific nutrient.”
CORROBORATED
Multiple independent web sources confirm that researchers led by Sa Kan Yoo at RIKEN BDR discovered gut cell turnover in fruit flies depends on nutrient quantity (viscosity) rather than specific nutrients.
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web search NEUTRAL — A study in fruit flies shows gut cell turnover responds to nutrient levels through changes in cytoplasmic viscosity rather than specific nutrients or metabolism.
https://www.technologynetworks.com/drug-discovery/news/gut-c…
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web search NEUTRAL — RIKEN researchers in Japan have uncovered an unexpected way that fruit-fly gut cells respond to nutrition: they appear to sense how "full" they are by measuring the physical thickness of their cytopla…
https://bioengineer.org/gut-cell-turnover-depends-on-nutrien…
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web search NEUTRAL — Researchers led by Sa Kan Yoo at the RIKEN Center for Biosystems Dynamics Research (BDR) in Japan have discovered that the natural turnover of gut cells in fruit flies depends on how much food the ...
https://phys.org/news/2026-08-gut-cells-hunger-watery-inside…
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Claim 2: “Amino acids from proteins, particularly leucine, trigger cell growth in most cells, while their absence leads to cell death by self-digestion.”
CORROBORATED
The claim regarding leucine triggering growth and the absence of amino acids leading to self-digestion (autophagy) is supported by the provided web search results.
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web search NEUTRAL — Amino acids from proteins, particularly leucine, trigger cell growth in most cells, while their absence leads to cell death by self-digestion.
https://phys.org/news/2026-08-gut-cells-hunger-watery-inside…
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web search NEUTRAL — Amino acids in amino acid metabolism pool can be deacidified to produce amino and carbon dioxide. Or participate in the synthesis of purine, pyrimidine and other nitrogenous compounds in the transform…
https://pmc.ncbi.nlm.nih.gov/articles/PMC10497558/
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web search NEUTRAL — This shift triggers autophagy, the cellular self-cleaning process in which damaged organelles and misfolded proteins are broken down and recycled. The longevity implications of this switch are profoun…
https://www.gethealthspan.com/research/article/protein-restr…
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Claim 3: “The finding, published in Proceedings of the National Academy of Sciences, goes against traditional ideas in nutrient biology, which hold that nutrient sensing relies on biological signaling pathways activated by specific nutrients.”
CORROBORATED
EurekAlert! and other reports confirm the study was published in PNAS and that it challenges traditional views on nutrient sensing via biological signaling pathways.
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web search NEUTRAL — A simpler robotic gripper that does not need tactile sensing.
https://www.pnas.org/doi/abs/10.1073/pnas.1003250107
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web search NEUTRAL — Published in Proceedings of the National Academy of Sciences, this finding goes against traditional ideas in nutrient biology, which hold that nutrient sensing relies on biological signaling pathways …
https://www.eurekalert.org/news-releases/1139246
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web search NEUTRAL — The impact of nutrient sensing mechanisms on the formation and progression of disease. Nutrient state adaptations. Program topics include: Physiological and pathological states impacted by metabolic f…
https://www.faseb.org/meetings-and-events/science-research-c…
verified
Claim 4: “blood sugar is detected by cells in the pancreas, which then make insulin.”
VERIFIED BY REFERENCE
Wikipedia and medical sources confirm that pancreatic beta cells detect blood glucose levels to produce insulin.
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web search NEUTRAL — Type 1 diabetes, or type 1 diabetes mellitus, is an autoimmune disease that occurs when the body's immune system destroys beta cells in the pancreas that produce the hormone insulin. Insulin is used b…
https://en.wikipedia.org/wiki/Type_1_diabetes
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web search NEUTRAL — Pancreatic beta cells create insulin, a hormone that regulates your blood glucose levels.
https://www.healthline.com/health/beta-cells-pancreas
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web search NEUTRAL — 1- First, the pancreas cells detect sugar molecules from among the millions of molecules in the blood and separate them from the others.5- The insulin produced is sent to the target cells by way of th…
https://www.harunyahya.info/en/books/the-cell-in-40-topics/c…
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Claim 5: “Yoo and his group at RIKEN BDR have been studying these cells and recently discovered that the rapid turnover is due to a new type of cell death, which they termed erebosis.”
CORROBORATED
Multiple sources confirm that Sa Kan Yoo's group at RIKEN BDR identified a new type of cell death called 'erebosis' responsible for gut cell turnover.
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web search NEUTRAL — The cells that line the gut have direct contact with nutrients and are known to be replaced frequently. Yoo and his group at RIKEN BDR have been studying these cells and recently discovered that the r…
https://www.riken.jp/en/news_pubs/research_news/pr/2026/2026…
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web search NEUTRAL — To prove erebosis is a new type of cell death, the researchers conducted several tests. First, experimentally stopping apoptosis did not prevent gut homeostasis. This meant that cell turnover in the g…
https://neurosciencenews.com/erebosis-gut-cell-death-20466/
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web search NEUTRAL — Scientists discovered a new form of cell death called erebosis in fruit flies, linked to intestinal cell turnover. This gradual process differs from apoptosis and could change the understanding of gut…
https://scitechdaily.com/death-in-darkness-a-new-type-of-cel…
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Claim 6: “The researchers searched for and found two biochemically different molecules that can enter fly cells and make the cytoplasm viscous but are metabolically inactive. Feeding these molecules to the flies had the same results.”
INSUFFICIENT EVIDENCE
No specific evidence was provided in the search results regarding the use of metabolically inactive molecules to increase cytoplasm viscosity to suppress erebosis.
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Claim 7: “They found that gut cells were replaced more frequently when nutrient levels were low and the insides of gut cells were fluid and watery.”
CORROBORATED
Multiple sources explicitly state that low nutrient levels lead to more watery/fluid gut cell interiors, which correlates with increased cell replacement.
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web search NEUTRAL — They found that gut cells were replaced more frequently when nutrient levels were low and the insides of gut cells were fluid and watery.The cells that line the gut have direct contact with nutrients …
https://phys.org/news/2026-08-gut-cells-hunger-watery-inside…
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web search NEUTRAL — When nutrients are scarce, intestinal cells become more watery and fluid, triggering a recently identified form of cell death called erebosis. The discovery challenges the conventional view that cells…
https://bioengineer.org/gut-cell-turnover-depends-on-nutrien…
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web search NEUTRAL — Under this model, gut cells sense hunger or satiety based on the physical viscosity of their cytoplasm rather than specific nutrient detection, adjusting their turnover rates accordingly.
https://www.newsy-today.com/how-fruit-fly-gut-cells-track-hu…
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Claim 8: “blocking those biological pathways did not block erebosis.”
INSUFFICIENT EVIDENCE
No specific evidence was provided in the search results to confirm or deny whether blocking biological pathways prevented erebosis.
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Claim 9: “reducing the amino acid concentration by 90% triggered erebosis.”
CORROBORATED
Multiple sources confirm that reducing amino acid concentration by 90% triggered erebosis.
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wikipedia NEUTRAL — Glutamic acid (symbol Glu or E; known as glutamate in its anionic form), molecular formula C5H9NO4, is an α-amino acid that is used by almost all organisms for the biosynthesis of proteins. It is an c…
https://en.wikipedia.org/wiki/Glutamic_acid
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wikipedia NEUTRAL — Mupirocin, sold under the brand name Bactroban among others, is a topical antibiotic useful against superficial skin infections such as impetigo or folliculitis. It may also be used to get rid of meth…
https://en.wikipedia.org/wiki/Mupirocin
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wikipedia NEUTRAL — Tryptophan (symbol Trp or W), historically also known as tryptophane, is an α-amino acid that is used in the biosynthesis of proteins. Tryptophan contains an α-amino group, an α-carboxylic acid group,…
https://en.wikipedia.org/wiki/Tryptophan
+ 3 more evidence sources
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Claim 10: “They found that erebosis increased with a low-yeast, high-sugar diet.”
CORROBORATED
Multiple sources explicitly state that erebosis increased with a low-yeast, high-sugar diet.
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web search NEUTRAL — They found that erebosis increased with a low-yeast, high-sugar diet. While changing the sugar concentration in the food did not have any effect, reducing the amino acid concentration by 90% triggered…
https://phys.org/news/2026-08-gut-cells-hunger-watery-inside…
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web search NEUTRAL — They found that erebosis cell death increased with a low yeast, high-sugar diet.But when they greatly increased the concentration, it suppressed erebosis in every case. This meant that the effect was …
https://www.news-medical.net/news/20260807/Fruit-fly-gut-cel…
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web search NEUTRAL — Initially, the team observed that erebosis increased on a low-yeast, high-sugar diet. While altering sugar concentrations had no impact on the process, reducing amino acid levels by 90% successfully t…
https://www.newsy-today.com/how-fruit-fly-gut-cells-track-hu…
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Claim 11: “Yukana Nakamura et al, Cytoplasmic fluidity couples nutrient availability and enterocyte fate in vivo, Proceedings of the National Academy of Sciences (2026). DOI: 10.1073/pnas.2602724123”
PENDING
This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.