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Impact of Vaccines Across the Lifespan: A New Perspective in Public Health – Conclusions of an Expert Panel – Part 1
Roberto Debbag
,María L. Ávila-Agüero
,José Brea
,Carlos Espinal
,Rodrigo Romero-Feregrino
,Jaime R. Torres
,Hebe Vásquez
,Robinson Cuadros
,Gustavo Lazo-Páez
,Andrea Schilling
+3 authors
Posted: 20 January 2026
A New Interpretation of the TCM "Fire" Theory Based on Metabolic Science: Construction and Explanation of the "Food Fire" Hypothesis
Dongyi Xiao
Posted: 20 January 2026
Impact of Vaccines Across the Lifespan: A New Perspective in Public Health – Conclusions of an Expert Panel – Part 2
Roberto Debbag
,María L. Avila-Agüero
,José Brea
,Carlos Espinal
,Rodrigo Romero-Feregrino
,Jaime R. Torres
,Hebe Vasquez
,Robinson Cuadros
,Gustavo Lazo-Páez
,Andrea Schilling
+3 authors
Posted: 20 January 2026
Infrasound and Human Health: Mechanisms, Effects, and Applications
Maryam Dastan
,Ellen Dyminski Parente Ribeiro
,Ursula Bellut-Staeck
,Juan Zhou
,Christian Lehmann
Posted: 16 January 2026
Serum DKK-1 Correlates with Pain Intensity, Flare-Ups, and Bone Mineral Density in Non-Obese Patients with Knee Osteoarthritis: A Single-Center, Cross-Sectional Study
Timea Csilla Nagy-Finna
,Arpad Solyom
,János Székely
,Pál-István Kikeli
,Erika-Lídia Szövérfi
,Hunor Lukács
,Anna-Lilla Faragó
,Emőke Horváth
,Horațiu Popoviciu
,Előd Ernő Nagy
Posted: 14 January 2026
Artificial Intelligence, Assessment Integrity, and Professionalism in Medical Education: Global Disruption and Lessons from the Gulf Cooperation Council Region
Mohammad Muzaffar Mir
,Muffarah Hamid Alharthi
,Jaber Alfaifi
,Shahzada Khalid Sohail
,Saba Muzaffar Mir
,Nadeem Tufail Raina
,Javed Iqbal Wani
,Saleem Javaid Wani
,Shahid Aziz
,Ayyub Ali Patel
+5 authors
Artificial intelligence (AI), particularly generative AI, is rapidly reshaping medical education worldwide. While AI-enabled tools offer significant opportunities for personalized learning, feedback automation, and clinical reasoning support, they simultaneously challenge foundational principles of assessment integrity and professional conduct. Traditional assessment models—largely predicated on individual authorship, knowledge recall, and observable performance are increasingly strained by AI systems capable of generating sophisticated responses, analyses, and clinical narratives. This disruption has prompted urgent reconsideration of what constitutes academic honesty, valid assessment, and professional identity formation in contemporary medical training. This article critically examines the intersection of AI, assessment integrity, and professionalism in medical education from a global perspective, with particular attention to the experiences and emerging lessons from the Gulf Cooperation Council (GCC). The GCC provides a distinctive context characterized by rapid digital transformation, centralized accreditation and licensing systems, high-stakes assessments, and strong sociocultural norms governing professional behavior. These features make the region an instructive case for understanding how medical education systems respond to AI-driven challenges at scale. Drawing on international literature, policy documents, and regional practices, this paper argues that AI should be understood not merely as a technological tool but as a normative disruptor that compels a re-examination of assessment validity, ethical responsibility, and professional identity. The article proposes a shift from reactive prohibition toward principled integration of AI within assessment and professionalism frameworks. It concludes by outlining future-oriented recommendations for educators, institutions, and regulators aimed at preserving trust, fairness, and professional standards in an AI-augmented educational landscape.
Artificial intelligence (AI), particularly generative AI, is rapidly reshaping medical education worldwide. While AI-enabled tools offer significant opportunities for personalized learning, feedback automation, and clinical reasoning support, they simultaneously challenge foundational principles of assessment integrity and professional conduct. Traditional assessment models—largely predicated on individual authorship, knowledge recall, and observable performance are increasingly strained by AI systems capable of generating sophisticated responses, analyses, and clinical narratives. This disruption has prompted urgent reconsideration of what constitutes academic honesty, valid assessment, and professional identity formation in contemporary medical training. This article critically examines the intersection of AI, assessment integrity, and professionalism in medical education from a global perspective, with particular attention to the experiences and emerging lessons from the Gulf Cooperation Council (GCC). The GCC provides a distinctive context characterized by rapid digital transformation, centralized accreditation and licensing systems, high-stakes assessments, and strong sociocultural norms governing professional behavior. These features make the region an instructive case for understanding how medical education systems respond to AI-driven challenges at scale. Drawing on international literature, policy documents, and regional practices, this paper argues that AI should be understood not merely as a technological tool but as a normative disruptor that compels a re-examination of assessment validity, ethical responsibility, and professional identity. The article proposes a shift from reactive prohibition toward principled integration of AI within assessment and professionalism frameworks. It concludes by outlining future-oriented recommendations for educators, institutions, and regulators aimed at preserving trust, fairness, and professional standards in an AI-augmented educational landscape.
Posted: 13 January 2026
161Tb-BPAMD as a High-Affinity Agent for Skeletal Targeting: Radiochemical and Biodistribution Insights
161Tb-BPAMD as a High-Affinity Agent for Skeletal Targeting: Radiochemical and Biodistribution Insights
Magdalena Radović
,Pavle Sitarica
,Dragana Stanković
,Marija Mirković
,Drina Janković
,Miloš Marić
,Marko Perić
,Sanja Vranješ-Djurić
,Aleksandar Vukadinović
Background: Bone-seeking radiopharmaceuticals based on bisphosphonates enable targeted therapy of skeletal metastases. They are ideal carriers for therapeutic radionuclides such as Terbium-161 (161Tb), a β-emitter that additionally releases short-range conversion and Auger electrons, which may enhance radiation dose delivery to small lesions. This study aimed to investigate the potential of the specific DOTA conjugated bisphosphonate - BPAMD (4-{[(bis(phosphonomethyl))carbamoyl]methyl}-7,10-bis(carboxymethyl)-1,4,7,10 tetraazacyclododec-1-yl)acetic acid) radiolabeled with 161Tb as a next-generation of bone-targeted radiopharmaceutical. Methods: BPAMDwas radiolabeled with 161Tb and 177Lu under mild conditions (pH 4.5, 95°C, 30min); subsequently the radiochemical purity was assessed by radio-TLC and radioelectrophoresis. Physicochemical properties (charge, lipophilicity, protein binding), in vitro stability (saline and human serum, 48h), and hydroxyapatite binding were evaluated for 161Tb-BPAMD. Biodistribution was studied in healthy Wistar rats (n=3 per time point) at 2h, 24h, and 7 days post-injection. Complementary DFT calculations explored the coordination chemistry of Tb3+ and Lu3+ with BPAMD. Results: Both complexes achieved >98% radiochemical yield. 161Tb-BPAMD exhibited negative charge, high hydrophilicity (logP = –3.92±0.13), low protein binding (19.07±1.01%), excellent radiochemical stability under simulated physiological conditions (>97% at 48h), and strong hydroxyapatite affinity (>98% with ≥10 mg HAP). Biodistribution showed high, stable bone uptake (8.06% ID/g at 2h; 6.70% ID/g at 24h; 5.31% ID/g at 7d) with rapid blood clearance (<0.001% ID/g at 24h), and low non-target retention. To contextualize its performance, 161Tb-BPAMD was compared with 177Lu-BPAMD, which demonstrated similarly strong skeletal retention (8.74% ID/g at 2h; 8.08% ID/g at 24h; 5.25% ID/g at 7d) but comparatively higher non-target organ uptake. Complementary DFT calculations indicate that both Tb3+ and Lu3+ favor octa-coordinated BPAMD complexes. Conclusions: 161Tb-BPAMD exhibits excellent radiochemical and pharmacokinetic properties, with enhanced biodistribution selectivity over 177Lu-BPAMD. Combined with the radiobiological advantages of 161Tb, it represents a promising theranostic candidate for targeted therapy of bone metastases.
Background: Bone-seeking radiopharmaceuticals based on bisphosphonates enable targeted therapy of skeletal metastases. They are ideal carriers for therapeutic radionuclides such as Terbium-161 (161Tb), a β-emitter that additionally releases short-range conversion and Auger electrons, which may enhance radiation dose delivery to small lesions. This study aimed to investigate the potential of the specific DOTA conjugated bisphosphonate - BPAMD (4-{[(bis(phosphonomethyl))carbamoyl]methyl}-7,10-bis(carboxymethyl)-1,4,7,10 tetraazacyclododec-1-yl)acetic acid) radiolabeled with 161Tb as a next-generation of bone-targeted radiopharmaceutical. Methods: BPAMDwas radiolabeled with 161Tb and 177Lu under mild conditions (pH 4.5, 95°C, 30min); subsequently the radiochemical purity was assessed by radio-TLC and radioelectrophoresis. Physicochemical properties (charge, lipophilicity, protein binding), in vitro stability (saline and human serum, 48h), and hydroxyapatite binding were evaluated for 161Tb-BPAMD. Biodistribution was studied in healthy Wistar rats (n=3 per time point) at 2h, 24h, and 7 days post-injection. Complementary DFT calculations explored the coordination chemistry of Tb3+ and Lu3+ with BPAMD. Results: Both complexes achieved >98% radiochemical yield. 161Tb-BPAMD exhibited negative charge, high hydrophilicity (logP = –3.92±0.13), low protein binding (19.07±1.01%), excellent radiochemical stability under simulated physiological conditions (>97% at 48h), and strong hydroxyapatite affinity (>98% with ≥10 mg HAP). Biodistribution showed high, stable bone uptake (8.06% ID/g at 2h; 6.70% ID/g at 24h; 5.31% ID/g at 7d) with rapid blood clearance (<0.001% ID/g at 24h), and low non-target retention. To contextualize its performance, 161Tb-BPAMD was compared with 177Lu-BPAMD, which demonstrated similarly strong skeletal retention (8.74% ID/g at 2h; 8.08% ID/g at 24h; 5.25% ID/g at 7d) but comparatively higher non-target organ uptake. Complementary DFT calculations indicate that both Tb3+ and Lu3+ favor octa-coordinated BPAMD complexes. Conclusions: 161Tb-BPAMD exhibits excellent radiochemical and pharmacokinetic properties, with enhanced biodistribution selectivity over 177Lu-BPAMD. Combined with the radiobiological advantages of 161Tb, it represents a promising theranostic candidate for targeted therapy of bone metastases.
Posted: 12 January 2026
Radiomics and Machine Learning for Automated Grading of Knee Osteoarthritis
Deborah Joice Stephen
,Sangeetha Sasikumar
,Satyavani Kaliamurthi
,Gurudeeban Selvaraj
Posted: 12 January 2026
Effect of Metformin on Sleep Architecture in Diabetic Patients with Sleep Apnea
Kristen Masada
,Daniel Nguyen
,Madhu Varma
Posted: 09 January 2026
Evaluation of the ‘qXR’ Software for the Detection of Pulmonary Nodules and Signs Suggestive of Heart Failure: A Comparative Analysis in a Latin American General Hospital
Adriana Anchía-Alfaro
,Sebastián Arguedas-Chacón
,Georgia Hanley-Vargas
,Sofía Suárez-Sánchez
,Luis Andrés Aguilar-Castro
,Sergio Daniel Seas-Azofeifa
,Kal Che Wong Hsu
,Diego Quesada-Loría
,María Felicia Montero-Arias
,Juliana Salas-Segura
+1 authors
Posted: 07 January 2026
Potential of Radiomics to Improve Diagnostic Accuracy of Mammograms and Personalise Patient Management in Breast Cancer
Yauhen Statsenko
,Darya Smetanina
,Aidar Kashapov
,Roman Voitetskii
,Milos Ljubisavljevic
Posted: 05 January 2026
West Nile Virus: Epidemiology, Surveillance, and Prophylaxis with a Comparative Insight from Italy and Iran
Soroosh Najafi
,Maryam Jojani
,Kianoosh Najafi
,Vincenzo Costanzo
,Caterina Vicidomini
,Giovanni N. Roviello
Posted: 30 December 2025
The Shrinking Blind Spot: How Freeze-Thaw Obscures Microscopic Evidence of Ante-Mortem Ecchymosis
Naomi Iacoponi
,Sara Giacomelli
,Emanuela Turillazzi
,Marco Di Paolo
Background/Objectives: Histological examination constitutes a fundamental methodology for establishing the vitality of a lesion. In cases where the corpse is preserved for an extended duration of time prior to the post-mortem evaluation, particularly if the body has undergone freezing and thawing cycles, postmortem changes may obscure or alter evidence of traumatic injuries. Consequently, the reliability of hematoxylin and eosin (H&E) staining for the reliable detection of intralesional erythrocytes in suspected traumatic fatalities is potentially severely compromised. The primary objective of this study is to rigorously underscore the detrimental influence of freeze-thaw processes on histologic examination and to advocate the indispensable incorporation of immunohistochemical analysis, specifically employing anti-human glycophorin A antibodies, to ascertain the presence of red blood cells. Methods: Skin samples from 10 autopsy cases were subjected to serial freeze-thaw cycles and analyzed using anti-human Glycophorin A (GPA) immunohistochemistry staining to evaluate skin lesion vitality in freeze-thawed tissues compared to fresh controls. Results: Results indicated that while H&E reliability was limited to fresh tissue, anti-GPA staining remained stable across all freeze-thaw cycles. Conclusions: Forensic pathologists must remain acutely cognizant of the potential artifacts produced by freeze-thaw cycles. In this cases anti-GPA staining proved to be a reliable asset to evaluate the vitality of a lesion.
Background/Objectives: Histological examination constitutes a fundamental methodology for establishing the vitality of a lesion. In cases where the corpse is preserved for an extended duration of time prior to the post-mortem evaluation, particularly if the body has undergone freezing and thawing cycles, postmortem changes may obscure or alter evidence of traumatic injuries. Consequently, the reliability of hematoxylin and eosin (H&E) staining for the reliable detection of intralesional erythrocytes in suspected traumatic fatalities is potentially severely compromised. The primary objective of this study is to rigorously underscore the detrimental influence of freeze-thaw processes on histologic examination and to advocate the indispensable incorporation of immunohistochemical analysis, specifically employing anti-human glycophorin A antibodies, to ascertain the presence of red blood cells. Methods: Skin samples from 10 autopsy cases were subjected to serial freeze-thaw cycles and analyzed using anti-human Glycophorin A (GPA) immunohistochemistry staining to evaluate skin lesion vitality in freeze-thawed tissues compared to fresh controls. Results: Results indicated that while H&E reliability was limited to fresh tissue, anti-GPA staining remained stable across all freeze-thaw cycles. Conclusions: Forensic pathologists must remain acutely cognizant of the potential artifacts produced by freeze-thaw cycles. In this cases anti-GPA staining proved to be a reliable asset to evaluate the vitality of a lesion.
Posted: 30 December 2025
Clinical Validation of the SuraSole® Smart Insole as a Portable Alternative to Laboratory-Based Gait Analysis
Thanaphum Laddachayaporn
,Dipak Kumar Agrawal
,Timporn Vitoonpong
,Pattarapol Yotnuengnit
,Supalak Luadlai
,Watcharin Jongpinit
,Khemchat Chaemklan
Posted: 25 December 2025
Atlas-Assisted Bone Age Estimation from Hand–Wrist Radiographs Using Multimodal Large Language Models: A Comparative Study
Erdem Ozkan
,Mustafa Koyun
Background/Objectives: Bone age assessment is critical in pediatric endocrinology and forensic medicine. Although recently developed multimodal large language models (LLMs) show potential in medical imaging, their diagnostic performance in bone age determination has not been sufficiently evaluated. This study evaluates the performance of four multimodal LLMs (ChatGPT-5, Gemini 2.5 Pro, Grok-3, and Claude 4 Sonnet) in bone age determination using the Gilsanz-Ratib (GR) atlas. Methods: This retrospective study included 245 pediatric patients (109 male, 136 female) under age 18 who underwent left wrist radiography. Each model estimated bone age using the patient's radiograph and GR atlas as reference (atlas-assisted prompting). Bone age assessments made by an experienced radiologist using the GR atlas were evaluated as the reference standard. Performance was assessed using mean absolute error (MAE), intraclass correlation coefficient (ICC), and Bland-Altman analysis. Results: ChatGPT-5 demonstrated statistically superior performance with MAE of 1.46 years and ICC of 0.849, showing highest alignment with the reference standard. Gemini 2.5 Pro showed moderate performance with MAE of 2.24 years; Grok-3 (MAE: 3.14 years) and Claude 4 Sonnet (MAE: 4.29 years) had error rates too high for clinical use. Conclusions: Significant performance differences exist among multimodal LLMs despite atlas-supported prompting. Only ChatGPT-5 qualified as "clinically useful," demonstrating potential as an auxiliary tool or educational support under expert supervision. Other models' reliability remains insufficient.
Background/Objectives: Bone age assessment is critical in pediatric endocrinology and forensic medicine. Although recently developed multimodal large language models (LLMs) show potential in medical imaging, their diagnostic performance in bone age determination has not been sufficiently evaluated. This study evaluates the performance of four multimodal LLMs (ChatGPT-5, Gemini 2.5 Pro, Grok-3, and Claude 4 Sonnet) in bone age determination using the Gilsanz-Ratib (GR) atlas. Methods: This retrospective study included 245 pediatric patients (109 male, 136 female) under age 18 who underwent left wrist radiography. Each model estimated bone age using the patient's radiograph and GR atlas as reference (atlas-assisted prompting). Bone age assessments made by an experienced radiologist using the GR atlas were evaluated as the reference standard. Performance was assessed using mean absolute error (MAE), intraclass correlation coefficient (ICC), and Bland-Altman analysis. Results: ChatGPT-5 demonstrated statistically superior performance with MAE of 1.46 years and ICC of 0.849, showing highest alignment with the reference standard. Gemini 2.5 Pro showed moderate performance with MAE of 2.24 years; Grok-3 (MAE: 3.14 years) and Claude 4 Sonnet (MAE: 4.29 years) had error rates too high for clinical use. Conclusions: Significant performance differences exist among multimodal LLMs despite atlas-supported prompting. Only ChatGPT-5 qualified as "clinically useful," demonstrating potential as an auxiliary tool or educational support under expert supervision. Other models' reliability remains insufficient.
Posted: 22 December 2025
Lymphoscintigraphy as Part of Nuclear Medicine of the Third Millennium
Lucio Mango
Posted: 18 December 2025
Sociodemographic and Clinical Predictors of Chronic Disease Outcomes in a Colombian Population: A Cross-Sectional Analysis of 2495 Patients
Adriana Guzmán Sánchez
,Lilibeth Sánchez-Guette
,Armando Monterrosa-Quintero
,Yaneth Herazo-Beltrán
,Narledis Nuñez-Bravo
,Carlos Andrés Collazos Morales
Objectives: This study aimed to identify predictors of absence versus presence of alteration in system status to inform targeted interventions. Methods: In a cross-sectional analysis of 2495 patients (70.1% women) from Bogotá’s public health facilities (Colombia Open Data, 2023), associations were examined between sociodemographic factors (gender, age groups, education, ethnicity) and clinical variables (BMI, disability type, COVID-19 vaccination, psychiatric risk, dyspnea scale) with health outcomes. Chi-square tests identified bivariate associations, and multivariable logistic regression predicted absence of alteration (reference: presence of alteration), reporting odds ratios (ORs), 95% confidence intervals (CIs), and model fit indicators (deviance, AIC, McFadden’s R²). Outliers were removed using z-scores; significance was set at p<0.05. Results: Women predominated in obesity (81% vs. 19% of men, p<0.001) and in health statuses without alteration but showed higher disability prevalence (16% vs. 6% in men, p<0.001). Men exhibited more altered statuses (e.g., pulmonary: 53.8% vs. 46.2%, p=0.006) and mental disabilities (70%, p<0.001). Underweight and obesity reduced odds of pulmonary alteration (OR=0.08 each, p<0.02) compared with overweight, whereas obesity decreased odds of absence of neurological alteration (OR=0.04, p=0.011). Absence of disability strongly favored absence of alteration (neurological OR=76.95, p<0.001). Lack of education increased odds of mental alteration (OR=2.67, p=0.006). Models showed moderate to excellent fit (R²=0.25–0.72). Conclusions: Gender, BMI, disability, age, and education are key predictors in NCD-related system alterations. Interventions such as BMI management and education strategies may reduce disparities and support WHO 2025 targets. Longitudinal research is recommended to strengthen causal interpretations.
Objectives: This study aimed to identify predictors of absence versus presence of alteration in system status to inform targeted interventions. Methods: In a cross-sectional analysis of 2495 patients (70.1% women) from Bogotá’s public health facilities (Colombia Open Data, 2023), associations were examined between sociodemographic factors (gender, age groups, education, ethnicity) and clinical variables (BMI, disability type, COVID-19 vaccination, psychiatric risk, dyspnea scale) with health outcomes. Chi-square tests identified bivariate associations, and multivariable logistic regression predicted absence of alteration (reference: presence of alteration), reporting odds ratios (ORs), 95% confidence intervals (CIs), and model fit indicators (deviance, AIC, McFadden’s R²). Outliers were removed using z-scores; significance was set at p<0.05. Results: Women predominated in obesity (81% vs. 19% of men, p<0.001) and in health statuses without alteration but showed higher disability prevalence (16% vs. 6% in men, p<0.001). Men exhibited more altered statuses (e.g., pulmonary: 53.8% vs. 46.2%, p=0.006) and mental disabilities (70%, p<0.001). Underweight and obesity reduced odds of pulmonary alteration (OR=0.08 each, p<0.02) compared with overweight, whereas obesity decreased odds of absence of neurological alteration (OR=0.04, p=0.011). Absence of disability strongly favored absence of alteration (neurological OR=76.95, p<0.001). Lack of education increased odds of mental alteration (OR=2.67, p=0.006). Models showed moderate to excellent fit (R²=0.25–0.72). Conclusions: Gender, BMI, disability, age, and education are key predictors in NCD-related system alterations. Interventions such as BMI management and education strategies may reduce disparities and support WHO 2025 targets. Longitudinal research is recommended to strengthen causal interpretations.
Posted: 18 December 2025
Revealing the Bioactive Potential of Romanian Wild Hop Cones: An Integrative Chemical, Antimicrobial Activity and In Silico Docking Analysis
Mona Luciana Galatanu
,Mariana Panțuroiu
,Viorel Ordeanu
,Razvan Neagu
,Roxana Mariuca Gavriloaia
,Sorina Nicoleta Aurică
,Gabriela Mariana Costache
Posted: 17 December 2025
Discrepancies in the Country Versions of the WHOQOL-BREF as a Potential Source of Error in Assessing Quality of Life and a Barrier to Comparative Research
Stanisław Maksymowicz
,Michał B. Paradowski
,Maria Libura
,Andrzej Jarynowski
Posted: 15 December 2025
Body Composition Phenotypes and Functional Limitations in Older Adults: The Impact of Sarcopenia, Obesity, and Sarcopenic Obesity
Marika Murawiak
,Marta Lewandowicz-Czarnecka
,Beata Kaczmarek
,Ewa Deskur-Śmielecka
,Katarzyna Wieczorowska-Tobis
,Roma Krzymińska-Siemaszko
Background/Objectives: Sarcopenia, obesity, and sarcopenic obesity (SO) are common in older adults and may be associated with functional limitations in basic (ADL) and instrumental (IADL) activities of daily living. This study aimed to evaluate the association between body composition phenotypes and ADL/IADL limitations among older adults. Methods: A cross-sectional study included 440 community-dwelling adults aged ≥60 years (281 women, 159 men; mean age 74.7 ± 7.8 years). Sarcopenia was diagnosed according to EWGSOP2 criteria, obesity was defined as percent body fat >42% in women and >30% in men, and SO was classified based on the ESPEN/EASO recommendations. Participants without obesity or sarcopenia were categorized as ‘normal’ phenotype. Functional status was evaluated using the Katz and Lawton scales, with limitations defined as ADL ≤5 and IADL ≤26 points, respectively. Multivariate logistic regression analysis was performed to determine factors associated with ADL and IADL limitations. Results: Over half of the participants (57.1%) had abnormal body composition: 31.6% obesity, 11.4% sarcopenia, and 13.2% SO. SO was associated with a nearly threefold higher risk of ADL limitations (OR = 2.86; p = 0.003) and a 3.7-fold higher risk of IADL limitations (OR = 3.68; p < 0.001) compared to the normal phenotype. Sarcopenia was associated with IADL limitations in the unadjusted model (OR = 2.44; p = 0.010). Independent predictors of ADL and IADL limitations included reduced muscle strength, a higher number of chronic diseases, and a worse nutritional status. Conclusions SO was linked to higher risk of both ADL and IADL limitations, while sarcopenia was associated only with IADL deficits. Obesity severity may be relevant, but its impact on daily functioning in older adults requires further study.
Background/Objectives: Sarcopenia, obesity, and sarcopenic obesity (SO) are common in older adults and may be associated with functional limitations in basic (ADL) and instrumental (IADL) activities of daily living. This study aimed to evaluate the association between body composition phenotypes and ADL/IADL limitations among older adults. Methods: A cross-sectional study included 440 community-dwelling adults aged ≥60 years (281 women, 159 men; mean age 74.7 ± 7.8 years). Sarcopenia was diagnosed according to EWGSOP2 criteria, obesity was defined as percent body fat >42% in women and >30% in men, and SO was classified based on the ESPEN/EASO recommendations. Participants without obesity or sarcopenia were categorized as ‘normal’ phenotype. Functional status was evaluated using the Katz and Lawton scales, with limitations defined as ADL ≤5 and IADL ≤26 points, respectively. Multivariate logistic regression analysis was performed to determine factors associated with ADL and IADL limitations. Results: Over half of the participants (57.1%) had abnormal body composition: 31.6% obesity, 11.4% sarcopenia, and 13.2% SO. SO was associated with a nearly threefold higher risk of ADL limitations (OR = 2.86; p = 0.003) and a 3.7-fold higher risk of IADL limitations (OR = 3.68; p < 0.001) compared to the normal phenotype. Sarcopenia was associated with IADL limitations in the unadjusted model (OR = 2.44; p = 0.010). Independent predictors of ADL and IADL limitations included reduced muscle strength, a higher number of chronic diseases, and a worse nutritional status. Conclusions SO was linked to higher risk of both ADL and IADL limitations, while sarcopenia was associated only with IADL deficits. Obesity severity may be relevant, but its impact on daily functioning in older adults requires further study.
Posted: 10 December 2025
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