Fang Qi,
Ying Liu,
Bing Zhang,
Qian Yu,
Songyao Zhang,
Haoyu Du,
Jiaxin Li,
Yue Zhao,
Chenxi Wang,
Jiayuan Li,
Silu Cui,
Jun Yu
, Available online , doi: 10.3967/bes2026.030
, Available online , doi: 10.3967/bes2026.028
, Available online , doi: 10.3967/bes2026.029
, Available online , doi: 10.3967/bes2026.024
, Available online , doi: 10.3967/bes2025.167
Xin Liu,
Xin Huang,
Jingya Zhang,
Haoran Li,
Ning Zhang,
Yingying Su,
Yang Wang,
Tongyan Liu,
Rengyu Wu,
Jincai Wei,
Bin Zhu
, Available online , doi: 10.3967/bes2025.150
Jie Sun,
Junyan Xi,
Zhishen Wu,
Wangjian Zhang,
Jianjun Bai,
Yining Xiang,
Yucan Zhang,
Jiajia Wang,
Shihao Wang,
Jing Gu,
Yuantao Hao,
Xiao Lin
, Available online , doi: 10.3967/bes2026.008
Objective Hand, foot, and mouth disease (HFMD) transmission is sensitive to temperature-humidity interactions; however, the role of wind speed in modifying these effects remains unknown. This study investigated how wind speed modifies the combined effects of temperature and humidity on HFMD burden and identified subgroups of individuals with increased vulnerability to these climate exposures. Methods We analyzed data from 524,100 HFMD cases and daily meteorological measurements across Guizhou, China, between 2012 and 2019. Disease burden was quantified as the number of years lived with disability. Exposure-response relationships and lag effects were modeled via distributed lag non-linear models. Additive interactions were assessed based on the proportions attributable to the interaction. The effects of sex, ethnicity, and urbanization were examined using stratified analyses. Results Meteorological factors showed synergistic effects on HFMD burden. The peak burden occurred at moderate mean temperatures (8.7–22.8 °C) combined with high relative humidity (> 73.7%), showing a 2.4-fold increase versus the reference. High wind speed (> 2.5 m/s) further increased this effect, with a 3.1-fold increase in burden. This joint effect was attributable to the additive interaction involving wind speed and remained robust in stratified analyses that identified heightened vulnerability among boys, minority areas, and urban agglomerations. Conclusion The HFMD burden was highest under specific combinations of temperature and humidity, and further increased with concurrent exposure to high wind speeds. Public health strategies for HFMD prevention should incorporate wind speed monitoring into early warning systems and address vulnerable subgroups, including boys and populations in minority areas and urban agglomerations.
Yang Shen,
Boji Wu,
Zhen Liu,
Yuanqi Yang,
Chun Li,
Siming Gong,
Shizhu Bian,
Xi Liu,
Chen Zhang,
Jihang Zhang,
Chuan Liu,
Zhexue Qin
, Available online , doi: 10.3967/bes2026.014
Objective Stress-induced changes in echocardiographic parameters reflect cardiac reserve function. This study aimed to identify predictors of acute mountain sickness (AMS) using exercise stress echocardiography (ESE) before ascent. Methods In this prospective cohort study, 104 healthy adults were enrolled and treated using ESE using a mechanically braked bicycle ergometer at a low altitude (LA) (500 m). Physiological data and echocardiographic parameters were collected before and during exercise. An ascent from 500 m to 4,100 m was completed by the bus within two days. AMS was identified using the Lake Louise Questionnaire. Results Among the 104 participants, 49 developed AMS at 4,100 m. Compared with individuals without AMS, those with AMS had a higher low-altitude (500 m) heart rate (HR) but lower stroke volume (SV) at rest, lower cardiac output (CO) and SV during exercise, and lower rates of change in CO, SV, and HR. Multivariate regression analysis revealed that female sex (odds ratio [OR] = 3.17, P = 0.039) and the rate of change in CO during exercise (OR = 0.98, P = 0.001) were independent risk factors for AMS. Participants with the lowest CO change rate after ESE presented the highest AMS risk. Conclusion ESE could serve as an effective screening tool for AMS susceptibility, and blunted CO augmentation during exercise is an independent predictive marker for AMS risk.
, Available online , doi: 10.3967/bes2026.009
Objective To investigate risk factors associated with significant histologic lesions in metabolic dysfunction-associated steatotic liver disease (MASLD) using the SAF (Steatosis, Activity, Fibrosis) scoring system and to develop a risk prediction model. Methods In this retrospective cohort of 415 biopsy-proven MASLD patients (2018–2022), participants were stratified into significant lesion (SAF activity grade ≥ 3 and/or fibrosis stage ≥ 3, n = 131) and non-significant lesion (activity < 3 and fibrosis < 3, n = 284) groups. Demographic, laboratory, and imaging parameters including platelet count (PLT), aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP), total bilirubin (TBIL), direct bilirubin (DBIL), total bile acids (TBA), triglycerides (TG), total cholesterol (TC), fasting plasma glucose (FPG), uric acid (UA), laminin (LN), hyaluronic acid (HA), procollagen type III (PC-III), collagen type IV (C-IV), controlled attenuation parameter (CAP), and liver stiffness measurement (LSM) were analyzed. Results Patients with significant lesions had higher body mass index (BMI), proportion of high-fat diet, AST, ALT, TBA, UA, CAP, and LSM (all P < 0.05). Multivariate logistic regression identified BMI (OR = 1.182), UA (OR = 1.003), CAP (OR = 1.005), and LSM (OR = 1.104) as independent predictors of significant histologic lesions, with a model area under the curve of 75.18%. Conclusion BMI, hyperuricemia, hepatic steatosis (CAP), and fibrosis (LSM) are independent risk factors for advanced MASLD. A combined non-invasive assessment may enhance risk stratification in clinical practice.
, Available online , doi: 10.3967/bes2026.026
Whether adherence to the Planetary Health Diet (PHD) benefits human and environmental health is less known. We included 131,130 adults from the National Health and Nutrition Examination Survey and UK Biobank. Adherence to the PHD was measured using the Planetary Health Diet Index (PHDI) and mortality was ascertained by linking to national registries. Cox proportional hazards and linear/ordinal logistic regression models were used to analyze the association between PHD and the risk of mortality and environmental impacts, respectively. During a median follow-up of 10.6 years, participants in higher adherence groups (Quartile 2: hazard ratio = 0.88, 95% confidence interval = 0.82–0.95; Quartile 3: 0.87, 0.82–0.93; Quartile 4: 0.70, 0.54–0.92) had a lower risk of mortality, compared to Quartile 1. The relationship between the PHDI and mortality showed linearity in the two cohorts (P = 0.1877 and 0.5456, respectively), and body mass index mediated 11.88% of the relationship. A higher PHDI was associated with lower greenhouse gas emissions but higher freshwater use. Our findings suggest that greater compliance with the PHD reduces mortality risk; however, its benefits for environmental sustainability are less certain.
Youjing Zhang,
Meiling Hu,
Ziyi Yang,
Jianxin Li,
Jie Cao,
Jichun Chen,
Fangchao Liu,
Keyong Huang,
Hongfan Li,
Chong Shen,
Dongsheng Hu,
Xiaoqing Liu,
Shujun Gu,
Ling Yu,
Jianfeng Huang,
Xiangfeng Lu,
Dongfeng Gu,
Shufeng Chen
, Available online , doi: 10.3967/bes2026.034
Objective To examine the associations of sleep duration and physical activity (PA) with central obesity among Chinese adults. Methods Based on the Prediction for Atherosclerotic Cardiovascular Disease Risk in China (China-PAR) project, 175,373 observations from 106,518 participants were included. Generalized estimating equations quantified the associations of sleep duration and PA with waist circumference (WC) and central obesity. Stratified and joint analyses were performed to evaluate combined effects, and an isotemporal substitution model was used to assess substitution effects. Results Suboptimal sleep duration (< 7 h/day or ≥ 9 h/day) and inadequate PA were associated with higher WC and an increased risk of central obesity. Compared with optimal sleep duration (7–< 9 h/day), both longer (≥ 9 h/day) and shorter (< 7 h/day) sleep durations were associated with increased WC (0.27 cm [95% confidence interval (CI): 0.18, 0.35] and 0.15 cm [95% CI: 0.04, 0.27], respectively) and a higher risk of central obesity (odds ratio, 1.09 [95% CI: 1.07, 1.12] and 1.05 [95% CI: 1.02, 1.08], respectively). Joint analyses revealed that individuals with inadequate PA and short sleep duration had the highest WC and highest risk of central obesity. Among individuals sleeping > 8 h/day, substituting 30 min/day of sleep with moderate-to-vigorous PA significantly reduced the risk of central obesity. Conclusion Suboptimal sleep duration has a detrimental effect on central obesity, and adequate PA can mitigate this effect. The impact of reallocating sleep duration varies by sleep duration, highlighting the need to optimize both PA and sleep patterns in China.
Yudong Wu,
Yongqiang Chen,
Chen Chen,
Liang Ding,
Linsen Yang,
Kai Zhang,
Xi Meng,
Wenhui Shi,
Yang Li,
Jiahao Chen,
Yue Chen,
Yingli Qu,
Wanying Shi,
Ziyu Hu,
Fanye Long,
Lijun Wang,
Luxi Wei,
Jinhui Zhou,
Feng Zhao,
Ying Zhu,
Maigeng Zhou,
Yuebin Lv,
Xiaoming Shi
, Available online , doi: 10.3967/bes2026.033
Objective To investigate the association between urinary cobalt levels and all-cause and cause-specific mortality in older Chinese adults. Methods This study enrolled older adults (≥ 60 years) from two cohorts. Urinary cobalt concentrations were quantified using inductively coupled plasma mass spectrometry. Mortality outcomes were ascertained by linking them to the Chinese Disease Surveillance Point System. Cox proportional hazards models were used to evaluate the association between urinary cobalt and mortality, and subgroup analyses were performed to identify vulnerable populations. Results A total of 9,727 participants were followed for an average of 4.754 years, during which 2,745 deaths were recorded. Participants with the highest urinary cobalt concentration had a 29% greater all-cause mortality risk (HR: 1.292, 95% CI: 1.155–1.445) than those in the lowest quartile, along with significantly elevated mortality from cardiovascular (24.8%), neurological (137.1%), and other causes (25.3%). Subgroup analyses revealed that female, Han Chinese individuals, and rural residents were more susceptible to the effects of cobalt. Conclusion Cobalt exposure was associated with elevated all-cause, cardiovascular, and neurological mortality in older adults, with female, Han ethnicity, and rural residents being vulnerable groups. These findings provide population-based evidence for clinical management and policy revisions regarding cobalt exposure.
Fengjie Wang,
Yutong Zhou,
Ri De,
Runan Zhu,
Yu Sun,
Dongmei Chen,
Liping Jia,
Qi Guo,
Yao Yao,
Zhen Zhu,
Naiying Mao,
Linqing Zhao
, Available online , doi: 10.3967/bes2026.032
Objective LLC-MK2/TMPRSS2 cells constitutively express TMPRSS2, eliminating the requirement for additional trypsin during HPIV3 culture. The efficiency of LLC-MK2/TMPRSS2 for isolating HPIV3 from respiratory specimens was evaluated in comparison with Madin-Darby Canine Kidney (MDCK). Methods HPIV3-positive respiratory specimens from children with acute respiratory infections (February-June 2025) were inoculated into LLC-MK2/TMPRSS2 and MDCK. The cytopathic effect (CPE) was monitored microscopically, and the proportion of positive cells was evaluated using direct immunofluorescence assay (DFA). Viral infection dynamics were assessed using the cycle threshold (Ct) values obtained by qPCR. Results Among 50 specimens, 35 strains (35/50, 70%) were successfully isolated using LLC-MK2/TMPRSS2, while 14 strains were isolated using MDCK (14/50, 28%). More pronounced CPE and a higher number of virus-infected positive cells were shown in LLC-MK2/TMPRSS2 compared to that in MDCK (P < 0.001 and P = 0.001, respectively). Among specimens with an initial Ct < 27, the isolation rate of LLC-MK2/TMPRSS2 was higher and the Ct values were lower (< 27) (82.6%, 19/23). Among specimens with an initial Ct of 23 ≤ Ct < 27, the number of specimens with a supernatant Ct ≥ 27 (63.6%, 7/11) was significantly less than that in MDCK (P = 0.003). Conclusion LLC-MK2/TMPRSS2 exhibits superior adaptability and replication efficiency in the isolation of HPIV3 from respiratory specimens.
, Available online , doi: 10.3967/bes2026.031
Objective The cardiovascular impact of earthquakes remains poorly understood, particularly regarding subclinical vascular diseases in women. This study examined the association between seismic exposure and the progression of carotid atherosclerosis in northern Chinese adults. Methods 7,412 individuals were enrolled, including survivors of the 1976 Tangshan earthquake (magnitude 7.8) and unexposed controls. Carotid atherosclerosis was assessed using bilateral ultrasonography. Multivariate logistic regression accounted for sociodemographic, clinical, and lifestyle covariates. Results Among females, earthquake exposure was associated with significantly higher atherosclerosis prevalence (44.9% vs. 33.1% in males), with elevated adjusted odds (OR = 2.32, 95% CI: 1.78–3.02, P < 0.001). No significant association was observed in males after full adjustment. In women, CVD risk increased twofold (95% CI: 1.66–2.55, P < 0.001), with gradients by age (≥ 65 years: HR = 3.98, P < 0.001), education (elementary: HR = 4.00, P < 0.001), and income (low-income: HR = 2.74, P < 0.001). Proximity to the epicenter further amplified the CVD risk (log-rank P < 0.0001). Conclusion Seismic exposure independently predicts accelerated carotid atherosclerosis and cardiovascular risk in women, underscoring the need to elucidate sex-specific mechanisms and develop targeted interventions for post-disaster populations.
, Available online , doi: 10.3967/bes2026.027
Objective To characterize long-term transition probabilities in waist circumference (WC) status from childhood into early adulthood and identify critical age windows for the development, persistence, and reversal of central obesity. Methods Using the China Health and Nutrition Survey data (1993–2022), 7,007 WC measurements from 2,440 participants aged 6–17 years at baseline were analyzed. Participants were grouped by baseline age: 6–11, 12–14, and 15–17 years. Generalized linear mixed-effects models were used to estimate WC transition probabilities, adjusting for sociodemographic factors. Results Central obesity prevalence increased from age 6, declined in early adulthood (approximately 22 years), and subsequently increased again. The 6–14-year age window exhibited dynamic, bidirectional transitions; specifically, the 10-year reversal probabilities from central obesity to normal WC were 44.19% (ages 6–11) and 41.39% (ages 12–14), decreasing to 26.93% for ages 15–17. Among those aged 15–17 years with central obesity, boys had a > 80% probability of maintaining increased WC for 20 years. Conclusion Ages 6–14 years represent a critical “reversal period” for central obesity. Interventions should prioritize this window using age- and sex-specific strategies to maximize normalization and curb long-term obesity risk.
, Available online , doi: 10.3967/bes2026.018
Objectives To characterize the distribution of bacterial and fungal pathogens in airport terminal environments, compare airborne aerosol sampling methods, identify high-abundance pathogenic species based on the WHO priority pathogens list, and provide a scientific basis for optimizing microbiological monitoring and control measures. Methods Sampling was conducted in the transit transfer area (A1), domestic arrivals area (A2), and domestic departures area (A3). Airborne aerosols were collected using cyclonic and filtration samplers, and surface samples were collected using sterile swabs. DNA analysis was performed using 2bRAD sequencing for microbiome profiling (2bRAD-M). Microbial community diversity and compositional differences were assessed using α-diversity indices (Chao1, Shannon, and Simpson) and β-diversity metrics. Results Bacteria dominated the indoor air microbiota of the airport terminal (98.4%), with Pseudomonadota (39.4%–62.9%) and Actinomycetota (18.9%–32.9%) as the predominant phyla. Microbial diversity was significantly higher in surface samples than in airborne aerosols. High-frequency contact surfaces (e.g., handrails) were enriched with human commensal bacteria, including Cutibacterium acnes (9.71%–19.4%). Multiple WHO-prioritized pathogens were detected, including Acinetobacter baumannii (0.3%–1.4%) and Pseudomonas aeruginosa (0.01%–1.24%). The transit transfer area (A1), characterized by poorer ventilation, showed higher microbial richness. Filtration samplers captured more microorganisms per unit volume than cyclonic samplers, with significant differences in detection profiles. Conclusion Sampling methods, sample types, and environmental conditions influence microbial distribution patterns across terminals. Detection of WHO Critical and High priority pathogens indicates potential risks of aerosol and contact transmission. Enhanced ventilation and disinfection of high-frequency contact surfaces can mitigate public health risks.
Mengen Guo,
Jiangmei Liu,
Guanhao He,
Jinlei Qi,
Jianxiong Hu,
Peng Yin,
Sujuan Chen,
Yulin Zhuo,
Yi Lin,
Xuelong Gu,
Tao Liu,
Ziqiang Lin,
Fengrui Jing,
Jinling You,
Wenjun Ma,
Fanna Liu,
Maigeng Zhou
, Available online , doi: 10.3967/bes2026.013
Objective Although many studies have examined temperature-related non-accidental mortality, the impact of heat waves on the mortality burden of chronic kidney disease (CKD) remains poorly understood. This study aimed to assess the CKD mortality burden associated with heat waves in China under global warming. Methods Mortality data on CKD from 2,790 counties/districts in China from 2004 to 2022 were collected from the Chinese Center for Disease Control and Prevention; meteorological data for the same period were obtained from the fifth-generation European Reanalysis Land dataset. A time-stratified case-crossover design combined with a distributed lag nonlinear model was used to examine the association between heat waves and CKD mortality. Future CKD mortality burdens attributable to heat waves under climate change and future population scenarios were projected. Results In total, 236,260 CKD deaths were included in this study. Compared to that during non–heat wave days, CKD mortality increased by 3.48% (95% confidence interval (CI): 1.67% to 5.33%) during heat waves, and the mortality risk escalated by 2.48% (95% confidence interval [CI]: 0.12% to 4.91%) for each 1 °C increment during heat wave days. Stratified analyses revealed that CKD mortality risks were greater for women (Excess Risk [ER] = 5.52%, 95% CI: 2.71% to 8.40%), individuals aged 65 years and older (ER = 4.60%, 95% CI: 2.30% to 6.96%), and people in mesic/cold regions (ER = 6.20%, 95% CI: 1.13% to 11.53%). The projections showed that the attributable fraction(AF) of CKD mortality due to heat waves would rise from 0.64% (95% CI: 0.52% to 0.78%) in the 2020s to 2.44% (95% CI: 1.97% to 2.95%) in the 2090s under the SSP5-8.5 scenario, with the highest burden in southeastern China, including Hainan (3.31%, 95% CI: 1.66% to 5.02%), Yunnan (3.05%, 95% CI: 1.46% to 4.75%), and Guangdong Province (2.84%, 95% CI: 1.24% to 4.41%). Conclusion This nationwide study demonstrated that exposure to heat waves significantly increased the mortality risk of CKD, and that women, older individuals, and people in mesic/cold regions are more susceptible to heat waves. Global warming will significantly increase the future CKD mortality burden attributed to heat waves, particularly in southeastern China. Our findings emphasize the need to address CKD in the context of ongoing climate change.
, Available online , doi: 10.3967/bes2026.005
Objective To investigate the association between thyroid hormone sensitivity indices and metabolic dysfunction-associated fatty liver disease (MAFLD) in euthyroid Chinese adults. Methods This cohort study included 5,356 euthyroid patients. The peripheral and central thyroid hormone sensitivity indices were calculated. Cox regression models were used to evaluate associations with MAFLD risk, and restricted cubic splines were used to assess potential nonlinearity. Mediation analyses based on an accelerated failure-time model were used to examine the role of the triglyceride-glucose (TyG) index. Results MAFLD incidence in euthyroid participants was 18.26%. After adjustment, higher free thyroxine (FT4) levels were inversely associated with MAFLD (HR = 0.973, 95% CI: 0.948 to 0.999, P = 0.043), whereas higher free triiodothyronine (FT3) levels increased MAFLD risk (HR = 1.118, 95% CI: 1.000 to 1.250, P = 0.050). Enhanced thyroid hormone sensitivity, as reflected by elevated FT3/FT4 levels and lower thyrotrophic T4 resistance index (TT4RI), thyroid stimulating hormone index (TSHI), and thyroid feedback quantile-based index (TFQIFT4), was also associated with a higher incidence (all P < 0.05). Mediation analyses indicated that TyG partially mediated the FT3/FT4–MAFLD and TFQIFT4–MAFLD associations, with indirect effects of -96.27 (95% CI: -124.67 to -70.42) and -4.95 (95% CI: -8.29 to -2.10), respectively. Conclusion Increased FT3/FT4 and decreased TFQIFT4 levels were significantly associated with a higher MAFLD risk in euthyroid adults, with TyG acting as a partial mediator.
, Available online , doi: 10.3967/bes2025.160
Objective The study aims to prospectively examine the association between the Minimum Dietary Diversity for Women (MDD-W) score and risk of gestational diabetes mellitus (GDM). Methods All participants were pregnant women enrolled in the Tongji Maternal and Child Health Cohort. Dietary intake was assessed using a food frequency questionnaire (FFQ) or 24-h dietary recall. The MDD-W score was constructed by categorizing all food items into 10 food groups, following the Food and Agriculture Organization guidelines. Oral glucose tolerance tests (OGTT) were conducted during 24-28 weeks of gestation to screen for GDM. Poisson regression models were used to assess the association between MDD-W scores and GDM risk. Results In total, 357 (11.8%) of the 3026 women were diagnosed with GDM. Compared with participants whose MDD-W score was ≥ 8, those with a score of 5-7 had an increased risk of GDM (relative risk (RR): 1.32; 95% confidence interval (CI): 1.03, 1.69), and those with a score ≤ 4 had a significantly higher GDM risk (RR: 1.58; 95% CI: 1.12, 2.26). Furthermore, these findings indicate that pregnant women with MDD-W scores < 8, in conjunction with being overweight or obese before pregnancy and excessive gestational weight gain, have the highest risk of developing GDM. Conclusions These data suggest that a higher MDD-W score during pregnancy is independently associated with a lower GDM risk. Therefore, promoting dietary diversity and weight management is recommended to protect pregnant women from developing gestational diabetes.
, Available online , doi: 10.3967/bes2025.144
Objective To develop hemoglobin (Hb) percentiles and thresholds for defining anemia among infants aged 0–5 months in China. Methods The National Nutrition and Health Systematic Survey for children aged 0–17 years in China, a nationwide cross-sectional study, was conducted between 2019 and 2021. Hb levels were measured in infants using the HemoCue 201+ analyzer. Age- and sex-specific Hb distributions were constructed for “healthy infants,” defined as those with adequate iron reserves at birth, exclusive breastfeeding, normal weight-for-age Z-score and weight growth velocity, normal neuropsychological development, and absence of acute or chronic diseases. A generalized additive model for location, scale, and shape was applied to fit the Hb percentiles. The 5th percentile of the Hb distribution was defined as the threshold for anemia. Results A total of 10,174 infants aged 0–5 months participated in the study, among whom 2,155 healthy infants were included in the analysis. Hb levels peaked at birth, gradually decreased to a nadir around 60 days after birth, and then rose to a plateau. The Hb thresholds defining anemia were 102.7 g/L, 96.3 g/L, 92.8 g/L, 95.4 g/L, 97.1 g/L, and 95.8 g/L for the 0-, 1-, 2-, 3-, 4-, and 5-month age groups, respectively. Conclusion This study establishes hemoglobin thresholds for defining anemia in infants aged 0–5 months based on a nationwide, population-based dataset in China.
, Available online , doi: 10.3967/bes2025.141
Objective This study investigates the global, regional, and national cardiovascular disease (CVD) burden caused by household air pollution (HAP) from 1990 to 2021 across regions, time periods, sexes, and age groups. Methods The global CVD mortality and disability-adjusted life years (DALYs) attributable to HAP are analyzed to assess their current status and historical trends. Quantitative methods are used to assess health inequalities. Projections up to the year 2040 are made using the Nordpred method. Results In 2021, 0.758 million deaths and 18.175 million DALYs were attributed to HAP-related CVD, with age-standardized rates (ASR) for mortality and DALYs of 8.950 and 210.354 per 100,000 individuals, respectively. The disease burden increased with age and was higher in men. While mortality and DALYs rates have decreased over the past three decades, with more significant reductions in low- and middle-income regions, health inequalities persist despite improvements. Projections indicate a slow increase in the CVD burden attributable to HAP by 2040, even as the per capita rates decline. Conclusion Although significant reductions in CVD attributable to HAP have occurred globally, particularly in low- and middle-income countries, disparities persist. Health inequalities have improved but remain significant. As the global population grows and ages, total cases will increase, highlighting the need for continued, targeted interventions.
, Available online , doi: 10.3967/bes2026.019
Objective Obesity is closely associated with an altered gut microbiota; however, the role of archaea in obesity remains unknown. We aimed to delineate the alterations in gut archaea in obese subjects and explore the changes in bariatric surgery-associated gut archaeal composition. Methods Metagenomic sequencing data from 191 obese subjects and 184 lean controls were retrieved from three public cohorts. Of these, 23 obese patients who underwent bariatric surgery were followed up for 3 months. Results The gut archaea of obese subjects showed significantly lower Shannon diversity index than those of lean controls. Principal component analysis of the gut archaea revealed distinct clusters in obese subjects and lean controls. A model using the 20 top archaeal genera discriminated obese from lean subjects with an area under the receiver operating characteristic curve (AUC) of 0.79, 0.83, and 0.86 in three cohorts. Ecological analysis showed decreased trans-kingdom correlations between archaea and bacteria in obese subjects compared to those in lean controls, with partial restoration observed after bariatric surgery. Conclusion This is the first study to demonstrate that obesity is characterized by gut archaeal dysbiosis across multiple cohorts. Bariatric surgery-induced weight loss is associated with significant changes in the gut archaea.
, Available online , doi: 10.3967/bes2026.016
Objective To investigate the association between occupational high-temperature exposure and accelerated biological aging. Methods A total of 140 male workers exposed to occupational high-temperatures and 207 male non-exposed control workers were selected as study subjects. Questionnaire surveys and health examinations were conducted. Biological age and organ-specific biological age were calculated using the Klemera–Doubal method. Generalized linear models were used to analyze the effects of occupational high-temperature exposure, body mass index (BMI), smoking, alcohol consumption, and sleep duration on biological age (BA) acceleration and organ-specific biological age. Results Significant differences were observed between the exposed and control groups in length of service, systolic blood pressure, red blood cell count, albumin levels, urea, creatinine, BA acceleration, and liver–kidney BA acceleration (P < 0.05). Compared with the control group, which showed a BA acceleration of 0.04 ± 1.34 years, the exposed group demonstrated significantly higher BA acceleration of 0.62 ± 1.31 years. After adjustment for covariates, workers exposed to high-temperatures exhibited significantly higher BA acceleration and liver–kidney BA acceleration than controls (P < 0.001). High-temperature exposure and BMI were associated with BA acceleration, with a significant interaction between the two factors (P < 0.05). High- temperature exposure, BMI, and smoking were identified as risk factors for BA acceleration, whereas sleep duration was a protective factor (P < 0.05). Conclusion Occupational high-temperature exposure may accelerate biological aging. An interaction exists between occupational high-temperature exposure and BMI in relation to BA acceleration.
Queyun Sun,
Cheng Cui,
Weiting Cai,
Lin Jiang,
Jingjing Xu,
Yi Yao,
Na Xu,
Xiaozeng Wang,
Zhenyu Liu,
Zheng Zhang,
Yongzhen Zhang,
Xiaogang Guo,
Zhifang Wang,
Yingqing Feng,
Qingsheng Wang,
Jianxin Li,
Xueyan Zhao,
Jue Chen,
Runlin Gao,
Lei Song,
Yaling Han,
Jinqing Yuan,
Ying Song
, Available online , doi: 10.3967/bes2026.015
Objective To investigate the joint effect of free fatty acid (FFA) and the triglyceride-glucose (TyG) index on the prognosis of overweight and obese coronary artery disease (CAD) patients. Methods A total of 5,887 patients were enrolled in this study. Restricted cubic spline analyses were used to assess the dose-response relationship of FFA and TyG with major adverse cardiovascular and cerebrovascular events (MACCE). Mediation analysis was used to examine whether TyG mediated the association between FFA and MACCE. Kaplan–Meier survival curves were used to compare the cumulative incidence of events. Multivariable Cox models were used to explore the independent association between Low-/High-FFA and Low-/High-TyG on outcomes. Results FFA and TyG were independent predictors of MACCE. TyG mediated 10.7% of the association between FFA and MACCE. Patients with high FFA and TyG levels exhibited a markedly higher MACCE risk (adjusted hazard ratio: 1.951, 95% confidence interval: 1.533–2.484; P < 0.001), with a significant interaction between FFA and TyG. Among patients with elevated FFA levels, MACCE increased progressively across higher TyG tertiles (P for trend = 0.001). Conclusions FFA and the TyG index independently predict adverse outcomes in overweight or obese CAD patients, with the TyG index mediating the relationship between FFA and MACCE. Their combined assessment enhances the risk stratification in this population.
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