Cited by 324Gut microbiota and healthSleep and Work-Related FatigueOral microbiology and periodontitis research

Gut microbiota and glucometabolic alterations in response to recurrent partial sleep deprivation in normal-weight young individuals

Open access
Benedict, Christian, Vogel, Heike, Jonas, Wenke, Woting, Anni, Blaut, Michael, Schürmann, Annette, Cedernaes, Jonathan·2016·Molecular Metabolism

Abstract

OBJECTIVE: Changes to the microbial community in the human gut have been proposed to promote metabolic disturbances that also occur after short periods of sleep loss (including insulin resistance). However, whether sleep loss affects the gut microbiota remains unknown. METHODS: In a randomized within-subject crossover study utilizing a standardized in-lab protocol (with fixed meal times and exercise schedules), we studied nine normal-weight men at two occasions: after two nights of partial sleep deprivation (PSD; sleep opportunity 02:45-07:00 h), and after two nights of normal sleep (NS; sleep opportunity 22:30-07:00 h). Fecal samples were collected within 24 h before, and after two in-lab nights, of either NS or PSD. In addition, participants underwent an oral glucose tolerance test following each sleep intervention. RESULTS: Microbiota composition analysis (V4 16S rRNA gene sequencing) revealed that after two days of PSD vs. after two days of NS, individuals exhibited an increased Firmicutes:Bacteroidetes ratio, higher abundances of the families Coriobacteriaceae and Erysipelotrichaceae, and lower abundance of Tenericutes (all P < 0.05) - previously all associated with metabolic perturbations in animal or human models. However, no PSD vs. NS effect on beta diversity or on fecal short-chain fatty acid concentrations was found. Fasting and postprandial insulin sensitivity decreased after PSD vs. NS (all P < 0.05). DISCUSSION: Our findings demonstrate that short-term sleep loss induces subtle effects on human microbiota. To what extent the observed changes to the microbial community contribute to metabolic consequences of sleep loss warrants further investigations in larger and more prolonged sleep studies, to also assess how sleep loss impacts the microbiota in individuals who already are metabolically compromised.

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Written from the paper’s full text.

TL;DR

In a randomized within-subject crossover study of nine normal-weight young men, two nights of partial sleep deprivation altered several gut microbial taxa and increased the Firmicutes:Bacteroidetes ratio, while also reducing fasting and postprandial insulin sensitivity. However, sleep loss did not change beta diversity or fecal short-chain fatty acid concentrations, and microbial changes were not significantly associated with the insulin-sensitivity reductions.

Key findings

  • After two nights of partial sleep deprivation (PSD) vs normal sleep (NS), the Firmicutes:Bacteroidetes ratio was almost doubled on day 2 (17.5 ± 13.7 vs 9.1 ± 4.6, P = 0.04, one-sided), with no significant baseline difference.
  • PSD increased abundances of Coriobacteriaceae (9.61 ± 5.59% vs 7.26 ± 3.30%) and Erysipelotrichaceae (3.37 ± 3.98% vs 2.55 ± 2.97%; both P = 0.049, one-sided) and decreased Tenericutes (0.129 ± 0.241% vs 0.284 ± 0.347%; P = 0.030, one-sided).
  • No PSD vs NS effect was found on beta diversity or fecal short-chain fatty acid concentrations; only trends for time effects on acetate, propionate, and total SCFAs were observed (all P < 0.10, two-sided).
  • Fasting insulin resistance increased after PSD vs NS (HOMA-IR 1.01 ± 0.12 vs 0.72 ± 0.08, P = 0.014, one-sided), fasting insulin was 34% higher (4.26 ± 0.48 vs 3.17 ± 0.35 μU/mL, P = 0.006, one-sided), and postprandial insulin sensitivity decreased by ∼22% (Matsuda index 8.0 ± 0.90 vs 10.2 ± 0.78, P = 0.017, one-sided).

Methods

  • Randomized within-subject crossover study with a standardized in-lab protocol; nine normal-weight men completed two conditions: two nights of PSD (sleep opportunity 02:45–07:00 h) and two nights of NS (22:30–07:00 h).
  • Fecal samples were collected within 24 h before and after two in-lab nights for each condition, yielding 36 samples; microbiota composition was assessed by V4 16S rRNA gene sequencing, and fecal SCFAs were measured by gas chromatography.
  • Participants underwent an oral glucose tolerance test after each sleep intervention; analyses included PERMANOVA, DESeq, Wilcoxon signed rank tests, Student’s t-tests, repeated measures ANOVA, and Pearson correlations.

Limitations

  • The paper states that only a subsample of participants provided fecal samples, the sample was small and limited to healthy young men, and the lack of counterbalancing in condition order among these nine participants may have influenced results.
  • The paper states that the intervention lasted only two days and nights, did not include recovery sleep, and restricted sleep in the first part of the night, so longer-term, circadian-timing, and recovery effects remain unknown.
  • The text makes evident that the study cannot establish causality between the observed microbial shifts and metabolic changes, and the authors note that larger, longer, and more diverse studies are needed.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1016/j.molmet.2016.10.003

Cites

81 of 81 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 50 cited sources checked · 0 supported · 0 flagged

  • Findingown data

    There was no significant difference in F:B ratio at baseline between conditions (13.1 ± 11.7 vs. 9.6 ± 7.2, P = 0.18, two-sided).

    “without any significant difference on baseline (13.1 ± 11.7 vs. 9.6 ± 7.2, P = 0.18, two-sided).”
    Quote in the paperNot a substantial claim
  • Findingown data

    Testing for within and across-subject variation for condition and time point with alpha and beta diversity using Observed and Shannon methods did not reveal any significant differences.

    “Testing for within and across-subject variation for both condition (NS vs. PSD) and time point (baseline vs. day 2), with alpha and beta diversity using Observed and Shannon methods, did not reveal any significant differences (Figure 2; all P > 0.05, two-sided; also Supplementary Table 2).”
    Quote in the paperNot a substantial claim
  • Findingown data

    Neither sleep condition nor fecal collection day were significant drivers for beta diversity using weighted abundances or hierarchical clustering.

    “neither sleep condition nor fecal collection day (time effect) were found to be significant drivers for beta diversity using weighted abundances or hierarchical clustering (baseline vs. day 2, P = 0.988; or day 2 samples for PSD vs. NS, P = 0.574, both two-sided; Supplementary Fig. 1A)”
    Quote in the paperNot a substantial claim
  • Findingown data

    Following two nights of PSD vs sleep, no significant changes were noted at the OTU level.

    “Following two nights of PSD vs. sleep, no significant changes were noted at the OTU level”
    Quote in the paperNot a substantial claim
  • Findingown data

    After PSD vs NS, there was a decrease in the Tenericutes phylum (0.129 ± 0.241% vs. 0.284 ± 0.347%; P = 0.030, one-sided).

    “we observed a decrease in the Tenericutes phylum after PSD vs. NS (0.129 ± 0.241% vs. 0.284 ± 0.347%; P = 0.030, one-sided; Supplementary Fig. 2A; Table 3A)”
    Quote in the paperNot a substantial claim
  • May combine two claims. 11
  • Classified as probably not a substantial claim. 35
  • The quote only partly states this claim. 1
  • May combine two claims.

    Findingown data

    In the partial sleep deprivation condition, participants slept 3 h:59 min ± 4 min on the first night and 4 h:3 min ± 3 min on the second night.

    “in the PSD condition, participants slept 3 h:59 min ± 4 min on the first night, and 4 h:3 min ± 3 min on the second night.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Findingown data

    In the normal sleep condition, subjects slept 7 h:47min ± 13 min on the first night and 8 h:00 min ± 7 min on the second night.

    “The polysomnographic analysis revealed that both on the first and second night, subjects slept 7 h:47min ± 13 min and 8 h:00 min ± 7 min, respectively, in the NS condition”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    There were no main effects of sleep or interaction effects for fecal SCFAs in the ANOVA (all P > 0.10, two-sided).

    “we did not observe any main effects of sleep or any interaction effects, in the ANOVA (all P > 0.10, two-sided; Table 4).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Following two nights of partial sleep deprivation compared with two nights of normal sleep, levels of the families Coriobacteriaceae and Erysipelotrichaceae were increased and abundance of the phylum Tenericutes was lower.

    “we observed increased levels of the families Coriobacteriaceae and Erysipelotrichaceae (phylum Actinobacteria and Firmicutes, respectively), with a lower abundance of the phylum Tenericutes, following two nights of PSD compared with two nights of normal sleep.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim.

    Study design and conductown data

    The study used a randomized within-subject crossover design.

    “In a randomized within-subject crossover study utilizing a standardized in-lab protocol (with fixed meal times and exercise schedules), we studied nine normal-weight men at two occasions”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Obesity is associated with an increase in total levels of short-chain fatty acids.

    “obesity has been associated with an increase in total levels of SCFAs [10]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [10] Schwiertz, 2010, Microbiota and SCFA in lean and overweight healthy subjects, Obesity (Silver Spring) source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    T2DM patients have a reduction in butyrate-producing bacterial species and lower levels of butyrate biosynthesis compared with non-diabetic controls.

    “T2DM patients have been found to have a reduction in butyrate-producing bacterial species, and lower levels of butyrate biosynthesis when the microbiomes of T2DM patients are compared with those of non-diabetic controls [6].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [6] Qin, 2012, A metagenome-wide association study of gut microbiota in type 2 diabetes, Nature source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Both acute and long-term changes in diet alter the abundance of bacterial species in the gut and their functional capacity to process nutrients, with such changes detectable within days of dietary interventions in humans.

    “Both acute [12], [14], [15], [16] and long-term [16], [17] changes in diet have been demonstrated to alter the abundance of bacterial species in the gut, as well as their functional capacity to process various nutrients, with such changes being detectable within days of dietary interventions in humans [15], [16].”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [12] Zeevi, 2015, Personalized nutrition by prediction of glycemic responses, Cell source

      Not checked in the free run.

    • cites [15] David, 2014, Diet rapidly and reproducibly alters the human gut microbiome, Nature source

      Not checked in the free run.

    • cites [16] Wu, 2011, Linking long-term dietary patterns with gut microbial enterotypes, Science source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Short-chain fatty acids can constitute about 2.2% of daily caloric intake.

    “SCFAs can constitute about 2.2% of daily caloric intake [18]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [18] Blaut, 2015, Gut microbiota and energy balance: role in obesity, Proceedings of the Nutrition Society source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Germfree mice lacking a functional microbiome are resistant to diet-induced obesity on a western diet.

    “germfree mice – which lack a functional microbiome – are resistant to diet-induced obesity on a western diet [7].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [7] Backhed, 2007, Mechanisms underlying the resistance to diet-induced obesity in germ-free mice, Proceedings of the National Academy of Sciences of the United States of America source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Beneficial effects on insulin sensitivity have been observed in human trials of metabolic syndrome patients who received transplants from lean donors.

    “beneficial effects concerning insulin sensitivity have been observed in human trials of patients with metabolic syndrome who received the transplants from lean donors [4].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [4] Vrieze, 2012, Transfer of intestinal microbiota from lean donors increases insulin sensitivity in individuals with metabolic syndrome, Gastroenterology source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Increased acetate production by gut bacteria promotes insulin secretion, hyperphagia, and obesity.

    “increased acetate production by gut bacteria has been found recently to promote insulin secretion, hyperphagia, and obesity [22]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [22] Perry, 2016, Acetate mediates a microbiome-brain-beta-cell axis to promote metabolic syndrome, Nature source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Transplanting the microbiota of genetically obese ob/ob mice or obese humans to lean germfree mice increases the adiposity of the recipient mice.

    “transplanting the microbiota of genetically obese ob/ob mice or obese humans to lean germfree mice increases the adiposity of the recipient mice [8], [9]”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [8] Turnbaugh, 2006, An obesity-associated gut microbiome with increased capacity for energy harvest, Nature source

      Not checked in the free run.

    • cites [9] Ridaura, 2013, Gut microbiota from twins discordant for obesity modulate metabolism in mice, Science source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Study design and conductcitation

    The OGTT was employed to test insulin sensitivity using the WHO-defined gold standard.

    “the OGTT was employed to test the participants' insulin sensitivity using the WHO-defined gold standard [33].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [33] WHO, 2006

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  • Classified as probably not a substantial claim.

    Premisecitation

    Curtailing sleep to half the recommended amount for a single night acutely impairs fasting insulin sensitivity.

    “Merely curtailing sleep to half the recommended amount for a single night acutely impairs fasting insulin sensitivity [26].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [26] Cedernaes, 2015, A single night of partial sleep loss impairs fasting insulin sensitivity but does not affect cephalic phase insulin release in young men, Journal of Sleep Research

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Differences in intestinal microbiota composition have been uncovered between healthy controls and those suffering from various diseases, including obesity, the metabolic syndrome, and type-2 diabetes mellitus.

    “Differences in intestinal microbiota composition have been uncovered between healthy controls and those suffering from various diseases, including metabolic pathologies such as obesity, the metabolic syndrome and type-2 diabetes mellitus (T2DM) [4], [5], [6].”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [4] Vrieze, 2012, Transfer of intestinal microbiota from lean donors increases insulin sensitivity in individuals with metabolic syndrome, Gastroenterology source

      Not checked in the free run.

    • cites [5] Hartstra, 2015, Insights into the role of the microbiome in obesity and type 2 diabetes, Diabetes Care source

      Not checked in the free run.

    • cites [6] Qin, 2012, A metagenome-wide association study of gut microbiota in type 2 diabetes, Nature source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Butyrate and propionate play a role in intestinal gluconeogenesis, which has beneficial effects on glucose and energy homeostasis.

    “Butyrate and propionate have recently been demonstrated to play a role in intestinal gluconeogenesis, which has beneficial effects on glucose and energy homeostasis [20].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [20] De Vadder, 2014, Microbiota-generated metabolites promote metabolic benefits via gut-brain neural circuits, Cell source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    When prolonged, sleep restriction can promote weight gain.

    “When prolonged, sleep restriction can promote weight gain [27]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [27] Spaeth, 2013, Effects of experimental sleep restriction on weight gain, caloric intake, and meal timing in healthy adults, Sleep source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Premisecitation

    The circadian rhythm of the gut microbiota may be perturbed following circadian misalignment.

    “and, correspondingly, that this may be perturbed following circadian misalignment [28].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [28] Thaiss, 2014, Transkingdom control of microbiota diurnal oscillations promotes metabolic homeostasis, Cell source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Premisecitation

    The gut microbiota exhibits a circadian rhythm in mice and humans.

    “There is currently some evidence in both mice and humans that the gut microbiota exhibits a circadian rhythm [28], [29], [30]”
    Quote in the paperSubstantial claim0 of 3 sources checked
    • cites [28] Thaiss, 2014, Transkingdom control of microbiota diurnal oscillations promotes metabolic homeostasis, Cell source

      Not checked in the free run.

    • cites [29] Liang, 2015, Rhythmicity of the intestinal microbiota is regulated by gender and the host circadian clock, Proceedings of the National Academy of Sciences of the United States of America source

      Not checked in the free run.

    • cites [30] Zarrinpar, 2014, Diet and feeding pattern affect the diurnal dynamics of the gut microbiome, Cell Metabolism source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    Analyses of changes in phyla, families, or OTUs were restricted to the eight most abundant features to minimize multiple comparisons.

    “Analyses of changes in the phyla, families, or OTUs of sequenced gut bacteria were analyzed for the eight most abundant features to minimize multiple comparisons.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductnone given

    False discovery rate q-values were calculated with the Benjamini-Hochberg procedure.

    “false discovery rate (FDR; q-values) was calculated with the Benjamini–Hochberg procedure.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    The composition of the microbiota has been found to regulate the metabolic response to various dietary factors in humans.

    “the composition of the microbiota has been found to regulate the metabolic response to various such factors in humans [11], [12].”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [11] Kovatcheva-Datchary, 2015, Dietary fiber-induced improvement in glucose metabolism is associated with increased abundance of Prevotella, Cell Metabolism source

      Not checked in the free run.

    • cites [12] Zeevi, 2015, Personalized nutrition by prediction of glycemic responses, Cell source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Study design and conductcitation

    Participants were provided with a non-sugar sweetened, low-fat diet throughout the three meals, except the OGTT, to isolate the solitary impact of sleep on the microbiota.

    “To further isolate the solitary impact of sleep on the microbiota – separate from the previously documented impact of e.g. high-fat diet [32] – participants were provided with a non-sugar sweetened, low-fat diet throughout the three meals, the exception being the oral glucose tolerance (OGTT) test on day 2”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [32] Hildebrandt, 2009, High-fat diet determines the composition of the murine gut microbiome independently of obesity, Gastroenterology source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Transplantation of the microbiome from the obese but not normal-weight twin to healthy germ-free mice promotes adiposity and perturbs glucose metabolism.

    “similar transplantation of the microbiome from the obese but not normal-weight twin, to healthy germ-free mice, also promotes adiposity and perturbs glucose metabolism [9].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [9] Ridaura, 2013, Gut microbiota from twins discordant for obesity modulate metabolism in mice, Science source

      Not checked in the free run.

  • Classified as probably not a substantial claim. May combine two claims. The quote only partly states this claim.

    Study design and conductcitation

    Sleep was recorded by polysomnography and scored by an experienced scorer blinded to study conditions using standardized criteria.

    “An experienced scorer blinded to the study conditions adhered to standardized criteria for subsequent sleep analysis [36].”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [36] Silber, 2007, The visual scoring of sleep in adults, Journal of Clinical Sleep Medicine source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Premisecitation

    Coriobacteriaceae and Erysipelotrichaceae have previously been linked to obesity and lipid, primarily cholesterol, metabolism.

    “Coriobacteriaceae and Erysipelotrichaceae – previously linked to obesity and lipid, primarily cholesterol, metabolism [43], [44], [45]”
    Quote in the paperSubstantial claim0 of 3 sources checked
    • cites [43] Zhang, 2009, Human gut microbiota in obesity and after gastric bypass, Proceedings of the National Academy of Sciences of the United States of America source

      Not checked in the free run.

    • cites [44] Spencer, 2011, Association between composition of the human gastrointestinal microbiome and development of fatty liver with choline deficiency, Gastroenterology source

      Not checked in the free run.

    • cites [45] Claus, 2011, Colonization-induced host-gut microbial metabolic interaction, MBio source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Among families of the phylum Firmicutes, Erysipelotrichaceae has been found to increase several fold in mice exposed to a high-fat or Western diet.

    “among families of the phylum Firmicutes, specifically Erysipelotrichaceae has instead been found to increase several fold in mice exposed to both a high-fat or Western diet [56].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [56] Fleissner, 2010, Absence of intestinal microbiota does not protect mice from diet-induced obesity, British Journal of Nutrition source

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  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Levels of Erysipelotrichaceae positively correlate with changes in liver fat following a 2-month long dietary choline manipulation.

    “levels of the latter positively correlate with changes in liver fat following a 2-month long dietary choline manipulation [44].”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [44] Spencer, 2011, Association between composition of the human gastrointestinal microbiome and development of fatty liver with choline deficiency, Gastroenterology source

      Not checked in the free run.

  • Classified as probably not a substantial claim.

    Study design and conductnone given

    A standardized in-lab protocol, including meal times and activity schedule, was used in an attempt to isolate the effect of sleep loss on the gut microbiome in normal-weight, healthy subjects.

    “We utilized a standardized in-lab protocol (including for factors such as meal times and activity schedule) in an attempt to isolate the effect of sleep loss on the gut microbiome in normal-weight, healthy subjects.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Tenericutes has been demonstrated to decrease following diet-induced obesity in mice.

    “Tenericutes has been demonstrated to decrease following diet-induced obesity in mice [47]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [47] Everard, 2014, Microbiome of prebiotic-treated mice reveals novel targets involved in host response during obesity, ISME Journal source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Increased abundance of Firmicutes and reduced abundance of Bacteroidetes in the gut microbiota have been observed in mice subjected to sleep fragmentation for 4 weeks.

    “increased abundance of Firmicutes and reduced abundance of Bacteroidetes in the gut microbiota have been observed in mice subjected to sleep fragmentation for 4 weeks [48]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [48] Poroyko, 2016, Chronic sleep disruption alters gut microbiota, induces systemic and adipose tissue inflammation and insulin resistance in mice, Scientific Reports source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Study design and conductreasoning

    Because only a subsample of participants provided fecal samples, it cannot be ruled out that the lack of counterbalancing in the order of experimental conditions may have influenced the present results.

    “since only a subsample of the participants was able to provide fecal samples, we cannot rule out that the lack of counterbalancing in the order of experimental conditions may have influenced the present results.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Increased levels of Coriobacteriaceae and Erysipelotrichaceae have been associated previously with changes in hepatic and lipid metabolism in humans and various rodent species.

    “These increased levels have been associated previously with changes in hepatic and lipid metabolism in humans and various rodent species [44], [45], [53], [54], [55].”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [44] Spencer, 2011, Association between composition of the human gastrointestinal microbiome and development of fatty liver with choline deficiency, Gastroenterology source

      Not checked in the free run.

    • cites [45] Claus, 2011, Colonization-induced host-gut microbial metabolic interaction, MBio source

      Not checked in the free run.

    • cites [53] Martinez, 2013, Diet-induced alterations of host cholesterol metabolism are likely to affect the gut microbiota composition in hamsters, Applied and Environmental Microbiology source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Obesity and associated metabolic perturbations primarily have been reflected by altered diversity of the microbiota.

    “Obesity and associated metabolic perturbations primarily have been reflected by altered diversity of the microbiota [73], [74]”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [73] Sonnenburg, 2016, Diet-microbiota interactions as moderators of human metabolism, Nature source

      Not checked in the free run.

    • cites [74] Le Chatelier, 2013, Richness of human gut microbiome correlates with metabolic markers, Nature source

      Not checked in the free run.

  • May combine two claims.

    Interpretationown data

    Two days of short vs normal sleep reduced insulin sensitivity without any associated changes in gut species diversity.

    “Two days of short vs. normal sleep was found to reduce insulin sensitivity without any associated changes in gut species diversity”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Smaller studies in humans have found that morbidly obese subjects harbor higher proportions of Coriobacteriaceae and Erysipelotrichaceae.

    “smaller studies in humans have found that morbidly obese subjects harbor higher proportions of Coriobacteriaceae and Erysipelotrichaceae [43]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [43] Zhang, 2009, Human gut microbiota in obesity and after gastric bypass, Proceedings of the National Academy of Sciences of the United States of America source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Weight loss can increase the already lower abundance of Bacteroidetes in obese subjects.

    “weight loss can increase the already lower abundance of Bacteroidetes in obese subjects [40]”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [40] Ley, 2006, Microbial ecology: human gut microbes associated with obesity, Nature source

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    An increase in the Firmicutes:Bacteroidetes ratio has been found to be associated with obesity in humans and in genetically or diet-induced obese mice in some but not all studies.

    “An increase in this ratio in some [40], but not all [10] studies, has been found to be associated with obesity in humans as well as in genetically or diet-induced obese mice [40], [46], [47]”
    Quote in the paperNot a substantial claim0 of 3 sources checked
    • cites [40] Ley, 2006, Microbial ecology: human gut microbes associated with obesity, Nature source

      Not checked in the free run.

    • cites [10] Schwiertz, 2010, Microbiota and SCFA in lean and overweight healthy subjects, Obesity (Silver Spring) source

      Not checked in the free run.

    • cites [46] Ley, 2005, Obesity alters gut microbial ecology, Proceedings of the National Academy of Sciences of the United States of America source

      Not checked in the free run.

39 of 39
  • The paper relies on this without support.

    No studies have investigated the impact of insufficient sleep on the composition of the human gut microbiota.

    “However, to date, there are no studies that have investigated the impact of insufficient sleep on the composition of the human gut microbiota.”
  • The paper relies on this without support.

    Studies are lacking that assess whether adverse metabolic changes that may increase the risk of T2DM and obesity, such as impaired insulin sensitivity, are associated with changes in the gut microbiome and associated SCFAs that could result from recurrent sleep loss.

    “Studies are therefore lacking that assess whether important adverse metabolic changes that may increase the risk of T2DM and obesity, such as impaired insulin sensitivity, are associated with changes in the gut microbiome and associated SCFAs that could result from recurrent sleep loss.”
  • The paper relies on this without support.

    No prior study has provided evidence for sleep deprivation-induced changes in microbial families of bacterial gut species linked to metabolic pathologies.

    “our study is the first to provide evidence for sleep deprivation-induced changes in microbial families of bacterial gut species, which have previously been linked to metabolic pathologies.”
3 of 3

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Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Total sleep deprivation in dogs leads to death after several days.

    “early studies in the late 19th century showed that total sleep deprivation in dogs leads to death after several days (reviewed in Ref. 38).”

    From The Sleep-Immune Crosstalk in Health and Disease (2019) · cites this paper as [38]

Cites

Flagged first, then by citations

1 of the 82 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Benedict, C., Vogel, H., Jonas, W., Woting, A., Blaut, M., Schürmann, A., & Cedernaes, J.
Affiliations
  • Uppsala University (SE)
  • German Center for Diabetes Research (DE)
  • German Institute of Human Nutrition (DE)
Corresponding author
Cedernaes, Jonathan
Venue
Molecular Metabolism
Publisher
Elsevier BV
Published
2016-12
Volume
5
Issue
12
Pages
1175-1186
ISSN
2212-8778 (ISSN-L)
OpenAlex
W2539003831
Cited by
324
References
82
Citations by year
2026: 33 · 2025: 45 · 2024: 37 · 2023: 42 · 2022: 42 · 2021: 41 · 2020: 39 · 2019: 18 · 2018: 15 · 2017: 10 · 2016: 2
FWCI
7.80
Type
journal article
Language
en
Open access
Locations
  • Molecular Metabolism (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Informationszentrum Lebenswissenschaften (ZB MED) (submittedVersion, cc-by)
  • KTH Publication Database DiVA (KTH Royal Institute of Technology) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Tore Nilsons Stiftelse för Medicinsk Forskning
  • Novo Nordisk Fonden
  • AFA Försäkring
  • Fredrik och Ingrid Thurings Stiftelse
  • Svenska Sällskapet för Medicinsk Forskning
  • Hjärnfonden
  • Åke Wiberg Stiftelse
  • Vetenskapsrådet
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
  • Health Sciences › Dentistry › Periodontics › Oral microbiology and periodontitis research
Keywords
gut microbiota, sleep restriction, sleep deprivation, insulin resistance, insulin sensitivity, glucose tolerance, Firmicutes/Bacteroidetes ratio, Coriobacteriaceae, Erysipelotrichaceae, Tenericutes, short-chain fatty acids, oral glucose tolerance test, metabolic disorders
MeSH terms
Firmicutes, Bacillota, Gastrointestinal Microbiome, Adult, Feces, Glucose, Glucose Tolerance Test, Humans, Insulin Resistance, Male, RNA, Ribosomal, 16S, Sleep, Sleep Deprivation, Cross-Over Studies, Bacteroidetes, Microbiota

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-10.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-10.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

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