ArticleFrontiers in endocrinology2023
Prevalence of vitamin B12 deficiency in type 2 diabetic patients taking metformin, a cross-sectional study in primary healthcare.
Article in Frontiers in endocrinology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
10 citing papers in PubMed.
- Association of Type 2 Diabetes Mellitus With Dietary Vitamin B12 Intake in Individuals With Different Fat Mass and Obesity-Associated (FTO) Genotypes.Food science & nutrition · 2026Article
- Zingerone as a neuroprotective agent in experimental diabetes: evidence from oxidative stress, inflammatory, and apoptotic markers.Naunyn-Schmiedeberg's archives of pharmacology · 2026Article
- What ultimately underlies vitamin B12 and folate deficiency in subjects treated with biguanides?Hormones (Athens, Greece) · 2026Review
- Prevalence of Vitamin B12 Deficiency Among Patients With Type 2 Diabetes Mellitus on Long-Term Metformin Therapy.Cureus · 2026Article
- Vitamin B12 Deficiency Associated with Metformin and Proton Pump Inhibitors and Their Combinations: Results from a Disproportionality and Interaction Analysis.Diseases (Basel, Switzerland) · 2025Article
- Role of vitamins in the development and treatment of osteoporosis (Review).International journal of molecular medicine · 2025Review
- Anemia in diabetes mellitus: Pathogenetic aspects and the value of early erythropoietin therapy.Metabolism open · 2025Review
- Long-Term Use of Metformin and Vitamin B12 Deficiency in Diabetes.Current drug safety · 2025Review
- Innovative Dual Therapy: Magnesium Oxide Nanoparticles and Royal Jelly for Parotid Gland Protection in Diabetic Male Rats.International journal of nanomedicine · 2025Article
- Individuals Diagnosed With Type 2 Diabetes Mellitus and the Status of Vitamin B12 Deficiency: A Review.Cureus · 2024Review
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.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background: Several studies documented that metformin use contributes to vitamin B12 deficiency in patients with type 2 diabetes mellitus (T2DM). However, there has been a lack of data assessing this issue in Jordan. Aims: Assess the vitamin B12 serum levels, frequency of vitamin B12 deficiency, and related factors among Jordanian patients with T2DM patients treated with metformin. Methods: a total of 447 subjects attending a primary health care center were included in this cross-sectional study consisting of T2DM patients who use metformin and a control group of non-diabetics. Serum B12 levels were evaluated and B12 deficiency was defined as serum B12 levels ≤ 200 pmol/L. Associations of B12 serum levels or B12 deficiency with other factors like gender, age, and duration of T2DM were analyzed. Results: There was no significant difference in serum B12 levels nor the frequency of vitamin B12 deficiency between T2DM metformin-treated patients and control groups. Among metformin-treated patients there was no difference relating to age, type 2 diabetes mellitus duration, proton pump inhibitors use, and metformin use (duration, dose) between patients with or without B12 deficiency. Conclusion: The prevalence of vitamin B12 deficiency among T2DM patients on metformin treatment in this study was high (48.9%). However, the treatment with metformin and the dose of metformin use was not associated with vitamin B12 deficiency.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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 OpenQuestion graph.