Many T1 diabetics in Finland are self-treating with more than 1200 IU of Vitamin D daily
The use of dietary supplements, and the association between supplemental vitamin D and glycaemic control in adult individuals with type 1 diabetes
Diabet Med . 2024 Feb 14:e15308. doi: 10.1111/dme.15308
Aila J Ahola 1 2 3, Valma Harjutsalo 1 2 3 4, Per-Henrik Groop 1 2 3 5; FinnDiane Study Group
Aims: To assess the dietary supplement use in adult individuals with type 1 diabetes, and to study the association between vitamin D supplementation and glycaemic control in an observational cross-sectional study.
Methods: The study subjects were participants of the Finnish Diabetic Nephropathy Study. Data were included from all individuals with type 1 diabetes with estimated glomerular filtration rate ≥60 mL/min/1.73 m2 , who had completed a diet questionnaire. In the questionnaire, the participants reported dietary supplement use for the past 30 days. A thorough investigation with an assessment of the blood panel was conducted at the study visit.
Results: Data were available from 1181 individuals (43% men, mean ± SD age 45 ± 13 years). Altogether 62% of the sample reported supplement use; 56% reported some vitamin or mineral and 27% reported non-vitamin and non-mineral supplement use. Supplement use was more frequent among women and those supplementing had better overall health. In the study sample, of the vitamins and minerals, vitamin D (45%) and magnesium (31%), respectively, were the most frequently reported. In the multivariable models, vitamin D supplementation was associated with better glycaemic control.
Starting from a daily dose of ≥30 μg, there was evidence of improving glycaemic control with higher doses of supplemental vitamin D (e.g., for 30 μg: B [Wald Confidence Internal], p-value, -2.76 [-5.03 to -0.49], 0.017).
Conclusions: Supplement use was frequent in this sample of adult individuals with type 1 diabetes. Due to potential drug-supplement interactions, the attending physicians should be aware of their patients' supplement use. The causality between vitamin D supplementation and glycaemic control should be assessed in a randomized controlled trial.
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Reported on by Grassrootshealth Feb 2024
Note: Finns may have the highest Vitamin D levels on the planet, so do not need much more
After years of vitamin D fortification and supplementation, Finland has 38 ng levels - March 2022
50+ VitaminDWiki Diabetes pages have T1 or TYPE 1 in the title
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VitaminDWiki – Overview Diabetes and vitamin D contains
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