Lower prediagnostic serum 25-hydroxyvitamin D concentration is associated with higher risk of insulin-requiring diabetes: a nested case–control study
E. D. Gorham, C. F. Garland, A. A. Burgi, S. B. Mohr and K. Zeng, et al.
Diabetologia, 2012, Volume 55, Number 12, Pages 3224-3227
Low serum 25-hydroxyvitamin D [25(OH)D] concentration may increase risk of insulin-requiring diabetes.
A nested case–control study was performed using serum collected during 2002–2008 from military service members. One thousand subjects subsequently developed insulin-requiring diabetes. A healthy control was individually matched to each case on blood-draw date (±2 days), age (±3 months), length of service (±30 days) and sex.
The median elapsed time between serum collection and first diagnosis of diabetes was 1 year (range 1 month to 10 years). Statistical analysis used matched pairs and conditional logistic regression.
ORs for insulin-requiring diabetes by quintile of serum 25(OH)D, from lowest to highest, were 3.5 (95% CI 2.0, 6.0), 2.5 (1.5, 4.2), 0.8 (0.4, 1.4), 1.1 (0.6, 2.8) and 1.0 (reference) (p trend <0.001). The quintiles (based on fifths using serum 25(OH)D concentration in the controls) of serum 25(OH)D in nmol/l, were <43 (median 28), 43–59 (median 52), 60–77 (median 70), 78–99 (median 88) and ?100 (median 128).
Individuals with lower serum 25(OH)D concentrations had higher risk of insulin-requiring diabetes than those with higher concentrations.
A 3.5-fold lower risk was associated with a serum 25(OH)D concentration ?60 nmol/l.
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- Overview Diabetes and vitamin D
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- T1 Diabetes increased about 15 percent per decade in Eastern Canada – Oct 2012
- Type 1 Diabetes associated with low vitamin D, especially in dark skinned youths – Dec 2012
Prevent half of T1 Diabetes with vitamin D levels of 50 ng – Dec 2012
- Vitamin D Deficiency Linked to Type 1 Diabetes UC San Diego Press Release on this study
level of 25(OH)D needed to prevent half the cases of type 1 diabetes is 50 ng/ml.
for most people, 4000 IU per day of vitamin D3 will be needed to achieve the effective levels
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