Public Health · Vol. 11, No. 1 · 2026 · pp. 773 · e-ISSN 2472-3878

Diabetes mellitus type 2 post Covid 19

Regina Cruz Curiel, Beatriz Adriana Vázquez Pérez, Julieta Aleli Izquierdo Vega, Ana Yareli Escudero Castelán, Olga Rocío Flores Chávez, Josefina Reynoso Vázquez, David Pérez Becker, Zabdy Anahí Dimas Ibarra, Giselle Lugo Ambrosio, Valeria González García, Jesús Carlos Ruvalcaba Ledezma

Undergraduate students in the Medical and Surgical Degree Program at the Institute of Health Sciences (ICSA-UAEH) of the Autonomous University of the State of Hidalgo, MexicoMexico
Centro Universitario de Ciencias de a Salud [CUCS] Universidad de Guadalajara, Jalisco, México
Academic Division of Medicine and Master’s Program in Biomedical Sciences (ICSA-UAEH), Institute of Health Sciences at the Autonomous University of the State of Hidalgo, MexicoMexico
Department of Psychology at the Institute of Health Sciences (ICSA-UAEH) of the Autonomous University of the State of Hidalgo, MexicoMexico
Department of Nursing at the (ICSA-UAEH) Institute of Health Sciences at the Autonomous University of the State of Hidalgo, MexicoMexico
Department of Pharmacy and MSP Coordination at the (ICSA-UAEH) Institute of Health Sciences of the Autonomous University of the State of Hidalgo, MexicoMexico
7Independent Researcher, Former Researcher, Academic Division of Medicine, UAEH-MSP, MexicoMexico

DOI: https://doi.org/10.17140/phoj-11-770 · Published 2026-09-17 · Licence: https://creativecommons.org/licenses/by/4.0 · © 2026 The Author(s)

Abstract

Type 2 diabetes mellitus is a very common disease in Mexican society; it is difficult to control due to poor dietary habits and a lack of adequate treatment. In this article, we will discuss whether the COVID-19 virus is a trigger for type 2 diabetes mellitus. It is known that in some people, a COVID-19 infection can affect blood glucose levels, but is it really a trigger for developing diabetes? Objective. To determine how type 2 diabetes mellitus might manifest as a post-COVID-19 condition. Methodology. An observational, descriptive, cross-sectional epidemiological study was conducted using a questionnaire created in Google Forms, administered to individuals who had contracted COVID-19 and who have been diagnosed with type 2 diabetes mellitus. Results. The results of the survey administered to 38 people indicate that 94.7% of our sample population has type 2 diabetes mellitus. Furthermore, we found that the most common age was 76 years, accounting for 15.8% of the sample, while the least common age was 22 years, accounting for 1.6%. Upon questioning our participants, we discovered that 82.9% had been diagnosed with diabetes before the COVID-19 pandemic and that 78.9% contracted COVID-19 between 2020 and 2022. Conclusions . Type 2 diabetes mellitus is one of the leading causes of death in our country; a large portion of the population suffers from this disease from an early age, making it difficult to establish a link between type 2 diabetes mellitus and COVID-19 as a complication.

Keywords: COVID-19; Diabetes Mellitus Type 2; DiabetesMellitusType2

Introduction

Dearreader(s),thisarticleisbasedonthemethodology Iusedtoteachpublichealthtothird-semesterstudents intheBachelorofMedicineandSurgeryprogram,on theonehand,toencouragefuturephysicianstolearn howtoconductresearchthatwill,insomeway,help themasdoctorsinthefuturetostayuptodate,toknow howtosearchforscientificinformation,andtoimprove thequalityofcaretheyprovidetotheirpatients, as wellastogainexperienceparticipatinginconferences. Atsomepoint,Iwilldedicatetimetopublishingthe methodologyforteachingpublichealth.

Ithasbeendemonstratedthatdiabetesmellitus(DM) isassociatedwithapoorprognosisforCOVID-19.RecentresearchshowsthatdiabeticpatientswithCOVID- 19frequentlyexperienceuncontrolledandsustained hyperglycemiarequiringexceptionallyhighdosesof insulin,orepisodesofacutehyperglycemiccrisis[1].

Researchteamsobservedthatbetacellsinfectedwith SARS-CoV-2stoppedproducinginsulin. InJackson’s study,infectedbetacellsdiedbyapoptosis,ageneticallyprogrammedsequenceofself-destructioninitiatedbydamagedcells[2].

Thepresenceofchronicinflammationindiabetes,impairedimmunesystemresponse,andcoagulationabnormalitiesmayinfluencetheunderlyingpathophysiologicalmechanismsthatcontributetoincreasedmorbidityandmortalityfromCOVID-19[3][12].

Epidemiologicaldatashowedmanyyearsagothattype 1diabetesismostcommonlydiagnosedfollowingan acuteillness,suchasviralgastroenteritisortheflu.It isknownthatthisprecedingillnesscausesthebody’s immunesystemtoincreasetheproductionofallantibodies,includingpreexistingones,suchasthosedirectedagainsttheinsulin-producingisletcellsofthe pancreas[4].

This may be related to prior stress-induced hyperglycemia,steroid-inducedhyperglycemia,ordirector indirecteffectsofSARS-CoV-2onthepancreaticislet β -cells[5].

However, to date, no study has systematically synthesized the available evidence on the association betweenCOVID-19andnew-onsetdiabetes[5].

ItisessentialforbothcliniciansandresearcherstoidentifythepotentialassociationbetweenCOVID-19and type2diabetesmellitus,asthiscouldhelpdesignmore effectivetreatmentstrategies, improvepatientcare, andguidefutureresearch[6].

Objective

Todeterminewhetherthereisanassociationbetween havinghadCOVID-19andthedevelopmentoftype2 diabetesmellitusasapost-COVID-19complication.

Researchquestion

IsCOVID-19atriggerassociatedwithtype2diabetes? Could type 2 diabetes mellitus manifest as a post- COVID-19complication?

Method

Anobservational,descriptive,cross-sectionalepidemiologicalstudywasconductedusingaquestionnaire createdinGoogleForms,administeredtoyoungpeopleandadultswhohadcontractedCOVID-19andwho hadbeendiagnosedwithtype2diabetesmellitusprior totheirCOVID-19infection.Thestudyincluded38respondents.Statisticalanalysiswasperformedwithin theGoogleFormsplatform.

Results

Theresultsofthesurveyadministeredto38people indicatethat94.7%ofoursamplepopulationhastype 2diabetesmellitus;thepredominantgenderaffected bythisdiseaseisfemale,accountingfor57.9%,while malesaccountforonly42%.Itwasalsofoundthatthe mostcommonageis76years,accountingfor15.8% ofthesample,whiletheleastcommonageis22years, accountingfor1.6%.

Uponsurveyingourpopulation, wediscoveredthat 82.9%hadbeendiagnosedwithdiabetesbeforecontractingCOVID-19,andthat78.9%contractedCOVID-19 between2020and2022. 63.2%ofoursamplestated thattheyweremonitoringtheirbloodglucoselevels beforecontractingCOVID-19,andonly12.1%reported havingbeenhospitalizedforCOVID-19.

Discussion

Theresultsshowthatasmallpercentageofourstudy populationhashadelevatedbloodglucoselevelsasa complicationofCOVID-19;however,thisisnotatrigger fortype2diabetesmellitus,since82.9%ofthepopulationhadalreadybeendiagnosedwithdiabetesbefore COVID-19.

Nevertheless,ageisanimportantfactorinthedevelopmentoftype2diabetesmellitus,astheresultsshow ahigherprevalenceamongpeopleover70yearsofage [12].

Whileoneofthelimitationsofastudyofthisnatureis thesamplesize,itisimportanttonotethatitisnoteasy toencourageparticipation, especiallywhendealing withachronicdiseasewherepatientsmayevendeny having[T2DM];however,thefactthatstudentsareinvolvedintheresearchprocessissignificant,anditsimportancewillbecomeevidentinthefutureofmedicine. Itisdifficulttoestablishalinkbetweentype2diabetes mellitus and COVID-19 as a result of [13]. Although somestudiesindicatearelativeriskgreaterthan1,it remainsunclearwhethertheconditionwastrulynewonsetdiabetesorcasesthathadgoneundiagnosed priortotheCOVID-19infection[14];duetolimitedparticipation,thisstudydoesnotdemonstrateanassociationregardingwhatistermedpost-COVID-19diabetes.

Conclusions

Type2diabetesmellitusisoneoftheleadingcauses ofdeathinourcountry;alargeportionofthepopulationhassufferedfromthisdiseasesinceanearlyage, makingitdifficulttoestablishalinkbetweentype2 diabetesmellitusandCOVID-19.

Accordingtothestudy,itcanbeinferredthatthereis noassociationbetweentype2diabetesmellitusand COVID-19, since the majority of the population surveyedreportedhavingdiabetespriortotheemergence ofthevirusin2020.

Conflictofinterest. Theauthorsdeclarethatthereis noconflictofinterestregardingthepublicationofthis article.

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