Evidence mapPaperPMID 41955463Full record

ArticleEndocrinology, diabetes & metabolism2026

Dairy Intake and Type 2 Diabetes Mellitus in Iranian Older Adults: Insights From the Baseline Phase of the Birjand Longitudinal Aging Study.

Mahboubeh Darabi, Amirmohammad Tajik, Mehraneh Movahedi Aliabadi, Zeinab Shakeri, Maryam Mohammadi, Hossein Fakhrzadeh, Mitra Moudi, Masoumeh Khorashadizadeh, Mehdi Varmaghani, Farshad Sharifi

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Article in Endocrinology, diabetes & metabolism, 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

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5 · Who and what money

Authors and funding

10 authors.

Mahboubeh DarabiDepartment of Management Sciences and Health Economy, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran.
Amirmohammad TajikSchool of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.ORCID https://orcid.org/0000-0002-3767-9921
Mehraneh Movahedi AliabadiHealth Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran.ORCID https://orcid.org/0000-0002-0456-1994
Zeinab ShakeriDepartment of Management Sciences and Health Economy, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran.
Maryam MohammadiDepartment of Health Education and Health Promotion, School of Health, Mashhad University of Medical Sciences, Mashhad, Iran.ORCID https://orcid.org/0000-0003-1106-984X
Hossein FakhrzadehElderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
Mitra MoudiGeriatric Health Research Center, Birjand University of Medical Sciences, Birjand, Iran.
Masoumeh KhorashadizadehGeriatric Health Research Center, Birjand University of Medical Sciences, Birjand, Iran.
Mehdi VarmaghaniDepartment of Management Sciences and Health Economy, Faculty of Health, Mashhad University of Medical Sciences, Mashhad, Iran.ORCID https://orcid.org/0000-0001-6249-821X
Farshad SharifiElderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.ORCID https://orcid.org/0000-0002-2035-6587

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundType 2 diabetes mellitus (T2DM) is a growing public health concern among older adults worldwide including in Iran. Despite extensive research on the metabolic effects of dairy products, their association with T2DM remains inconsistent, particularly in non-Western populations. This study examined the relationship between dairy consumption including specific types, and T2DM among older adults in eastern Iran.

methodsThis cross-sectional study utilised baseline data from the Birjand Longitudinal Aging Study (BLAS), which included community-dwelling adults aged 60 years and older. Dietary intake was assessed using structured questionnaires, and participants were categorised into tertiles based on dairy consumption (low, moderate, high). T2DM status was determined by FBS ≥ 126 mg/dL or a previous physician diagnosis. Logistic regression models estimated the odds ratios (ORs) and 95% confidence intervals (CIs) for T2DM across different levels of dairy intake, adjusting for potential confounders.

resultsData from 1348 participants were analysed, with an overall T2DM prevalence of 27.15%. Individuals in the highest tertiles of yogurt and cheese intake had significantly increased odds of T2DM (OR = 1.454, 95% CI = 1.08-2.20, p = 0.08; OR = 1.44, 95% CI = 1.04-2.00, p = 0.029). No significant association was found between milk consumption and T2DM risk. Total dairy consumption showed no significant association with T2DM in the fully adjusted model (OR = 1.42, 95% CI = 1.00-2.403, p = 0.05).

conclusionsThis study reveals a complex association between dairy intake and the risk of T2DM in Iran, in which high consumption of yogurt and cheese was paradoxically associated with increased odds of disease. This finding may be explained by the high fat content of these products, residual confounding from unmeasured dietary patterns, or biological pathways related to diabetes pathology and gut microbiota modulation that were not captured in our analysis.

Indexed as

AgingDairy ProductsDiabetes Mellitus, Type 2DietAgedCross-Sectional StudiesFemaleHumansIranLongitudinal StudiesMaleMiddle AgedPrevalenceRisk FactorsYogurtcheesedairy productshealth services for agedtype 2 diabetes mellitusyogurt

Identifiers

PMID41955463
PMCPMC13065220

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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.