ArticleTherapeutic advances in gastroenterology2022
Gastrointestinal manifestations of long COVID: A systematic review and meta-analysis.
Article in Therapeutic advances in gastroenterology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
42 citing papers in PubMed, 1 synthesis or guideline pooled it, 90 citations in OpenAlex.
- Causal relationship between COVID-19, vaccination, and 20 digestive diseases: a comprehensive two-sample Mendelian randomization study.Virology journal · 2025Pooled it
- Review
- The role of artificial intelligence in managing COVID-19 and long COVID: a narrative review.Osong public health and research perspectives · 2026Article
- Intestinal permeability correlated with chronic fatigue in a patient with long COVID-A case report and overview of the literature.Frontiers in medicine · 2026Article
- The Role of Probiotics and Their Postbiotic Metabolites in Post-COVID-19 Syndrome.Molecules (Basel, Switzerland) · 2025Review
- Observational
- Neuroimmune pathophysiology of long COVID.Psychiatry and clinical neurosciences · 2025Review
- Digestive Manifestations of Post-COVID-19: A Focus on Therapeutic Strategies.Pathogens (Basel, Switzerland) · 2025Review
- Article
- How Are Brain Fog Symptoms Related to Diet, Sleep, Mood and Gastrointestinal Health? A Cross-Sectional Study.Medicina (Kaunas, Lithuania) · 2025Article
- Review of organ damage from COVID and Long COVID: a disease with a spectrum of pathology.Medical review (2021) · 2025Review
- Chronic inflammation in post-acute sequelae of COVID-19 modulates gut microbiome: a review of literature on COVID-19 sequelae and gut dysbiosis.Molecular medicine (Cambridge, Mass.) · 2025Review
- Understanding the impact on digestive disease in the post-COVID-19 condition: Editorial on "Long-term gastrointestinal and hepatobiliary outcomes of COVID-19: A multinational population-based cohort study from South Korea, Japan, and the UK".Clinical and molecular hepatology · 2025Article
- Review
- Addressing Post-Acute COVID-19 Syndrome in Cancer Patients, from Visceral Obesity and Myosteatosis to Systemic Inflammation: Implications in Cardio-Onco-Metabolism.Biomedicines · 2024Review
- Review
- Long COVID in Children, Adults, and Vulnerable Populations: A Comprehensive Overview for an Integrated Approach.Diseases (Basel, Switzerland) · 2024Review
- The Aftermath of COVID-19: Exploring the Long-Term Effects on Organ Systems.Biomedicines · 2024Review
- From Acute Infection to Prolonged Health Consequences: Understanding Health Disparities and Economic Implications in Long COVID Worldwide.International journal of environmental research and public health · 2024Review
- Gastrointestinal Manifestations and Their Association with Neurologic and Sleep Problems in Long COVID-19 Minority Patients: A Prospective Follow-Up Study.Digestive diseases and sciences · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Prolonged symptoms after COVID-19 are an important concern due to the large numbers affected by the pandemic. Objectives: To ascertain the frequency of gastrointestinal (GI) manifestations as part of long GI COVID. Design: A systematic review and meta-analysis of studies reporting GI manifestations in long COVID was performed. Data Sources and Methods: Electronic databases (Medline, Scopus, Embase, Cochrane Central Register of Controlled Trials, and Web of Science) were searched till 21 December 2021 to identify studies reporting frequency of GI symptoms in long COVID. We included studies reporting overall GI manifestations or individual GI symptoms as part of long COVID. We excluded pediatric studies and those not providing relevant information. We calculated the pooled frequency of various symptoms in all patients with COVID-19 and also in those with long COVID using the inverse variance approach. All analysis was done using R version 4.1.1 using packages 'meta' and 'metafor'. Results: A total of 50 studies were included. The frequencies of GI symptoms were 0.12 [95% confidence interval (CI), 0.06-0.22, Conclusion: GI symptoms in patients were seen in 12% after COVID-19 and 22% as part of long COVID. Loss of appetite, dyspepsia, irritable bowel syndrome, loss of taste, and abdominal pain were the five most common GI symptoms of long COVID. Significant heterogeneity and small number of studies for some of the analyses are limitations of the systematic review.
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Registered trials
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