Evidence mapPaperPMID 41915489Full record

ArticleDiabetes care2026

The Association Between Ambient Temperature and Hypoglycemia in People Living With Type 1 Diabetes: A Case Time Series Analysis Using Real-Time Continuous Glucose Monitoring.

Harriet E Daultrey, Nick S Oliver, Ali J Chakera, Arturo de la Cruz Libardi, Collins C Iwuji, Antonio Gasparrini

Abstract read
In one paragraph

Article in Diabetes care, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from 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.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

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No citing paper in PubMed yet.

4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Harriet E DaultreyDepartment of Global Health and Infection, Brighton and Sussex Medical School, Brighton, U.K.ORCID 0000-0002-7230-3946
Nick S OliverDivision of Diabetes, Endocrinology and Metabolism, Imperial College London, London, U.K.ORCID 0000-0003-3525-3633
Ali J ChakeraUniversity Hospitals Sussex NHS Trust, Brighton, U.K.ORCID 0000-0001-5820-8363
Arturo de la Cruz LibardiEnvironment & Health Modelling Lab, Department of Public Health Environments and Society, London School of Hygiene and Tropical Medicine, London, U.K.
Collins C IwujiDepartment of Global Health and Infection, Brighton and Sussex Medical School, Brighton, U.K.
Antonio GasparriniEnvironment & Health Modelling Lab, Department of Public Health Environments and Society, London School of Hygiene and Tropical Medicine, London, U.K.

Funding

Medical Research Council-UK IDMedical Research Council-UK MR/R013349/1Medical Research Council-UK MR/V034162/1Medical Research Council-UK Wellcome Trust (ID: 320878/Z/24/Z)
6 · The paper itself

Abstract

objectiveWe investigated the short-term association between ambient temperature and risk of hypoglycemia in adults with type 1 diabetes mellitus (T1DM). We hypothesized that higher ambient temperature would increase the odds of hypoglycemia developing. RESEARCH DESIGN AND

methodsWe applied a case time series design to assess the longitudinal association between ambient temperature and hypoglycemia measured using routine continuous glucose monitoring data from individuals with T1DM. A quasi-binomial fixed-effect regression with distributed lag nonlinear models was used to estimate potentially nonlinear and lagged risks of nonoptimal temperature on hypoglycemic episodes, defined as ≥15 min of glucose concentration <3.9 mmol/L. The model was adjusted for long-term trends, seasonality, day of the week, and public holidays. A secondary outcome was change in daily mean glucose concentration.

resultsWe analyzed 32,966,282 glucose readings from 679 adults with T1DM attending two National Health Service clinics in Sussex, England, between 2017 and 2024. Higher ambient temperatures were associated with an increased risk of hypoglycemia. The risk increased nonlinearly for temperatures above 13°C, with the odds ratio reaching 1.26 (95% CI 1.13-1.26) at 25°C. The strongest effect was observed on the same day of the exposure, and it diminished over subsequent days. In the secondary analysis, higher temperatures were associated with lower mean glucose levels.

conclusionsElevated ambient temperature significantly increases the short-term risk of hypoglycemia in adults with T1DM. These findings are specific to the U.K. population and climate, which may limit generalizability. Our results support anticipatory insulin adjustments during hot weather and consideration of ambient temperature in hybrid closed-loop insulin algorithms.

Indexed as

Diabetes Mellitus, Type 1HypoglycemiaTemperatureAdultBlood GlucoseContinuous Glucose MonitoringFemaleHumansMaleMiddle AgedBlood Glucose

Identifiers

PMID41915489
PMCPMC13385939

What Socratic holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.