Relationship between vitamin B12 levels and insulin resistance in postmenopausal women from Colombia Caribbean
DOI:
https://doi.org/10.11606/issn.2176-7262.rmrp.2023.201354Keywords:
Vitamin B12, Insulin resistance, Diet, Postmenopause, Cardiovascular diseasesAbstract
Introduction: The high prevalence of low vitamin B12 serum levels has been recognized as a public health problem in Latin America; however, the current magnitude of this deficiency in Colombia is uncertain. Low levels of vitamin B12 can induce clinical and subclinical hematological and neurological disorders. Epidemiological studies have demonstrated a relationship between vitamin B12 deficiency and cardiovascular diseases (CVDs). However, the role of vitamin B12 in insulin resistance has been poorly studied. Objective: This study aimed to evaluate the relationship between vitamin B12 serum levels and biochemical and anthropometric markers related to CVDs and insulin resistance in postmenopausal women from Colombia Caribbean. Methods: Correlational, descriptive study. By convenience sampling, 182 postmenopausal women from the medical consultation service of a health institution were linked. Serum vitamin B12 levels, anthropometric variables (body mass index, abdominal perimeter), and biochemical variables (glycemia, insulin, lipid profile, HOMA IR) were evaluated. Results: The average value of the vitamin B12 serum level was 312.5 ± 122.5 pg/mL (230.6 ± 90.4 pmol/L); 46.7% of the women had less than adequate levels of 300 pg/mL (> 221 pmol/L), and 9. 9% were deficient, with levels of less than 200 pg/mL (148 pmol/L). The women with metabolic syndrome were 63.7%, and according to HOMA IR, 52.7 % had insulin resistance. A significant inverse relationship was shown between serum vitamin B12 levels with basal glycemic (P =0.002) and HOMA-IR (P =0.040). Conclusions: A significant inverse relationship between vitamin B12 levels and basal glycemia and HOMA-IR was observed. These findings highlight vitamin B12 deficiency in postmenopausal women and suggest nutritional supplementation.
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Copyright (c) 2023 Luz Adriana Sarmiento-Rubiano, Jimmy Everth Becerra, Roberto Carlos Rebolledo-Cobos, Norella Ortega-Ariza, María Cristina Sarmiento-Rubiano
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