Why some diabetics with kidney problems don't respond well to vitamin D pills
Features of correction of vitamin D deficiency in patients with diabetic kidney disease: the role of vitamin D-binding protein
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
People with type 2 diabetes and early kidney disease often have very low vitamin D. Giving them vitamin D pills helps most, but if they have too much of a special protein (VDBP) in their blood, the vitamin doesn't work as well.
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Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
People with type 2 diabetes and early kidney disease often have very low vitamin D. Giving them vitamin D pills helps most, but if they have too much of a special protein (VDBP) in their blood, the vitamin doesn't work as well.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 561 / 72
Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
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Claims (6)
People with type 2 diabetes and early kidney disease consistently show low vitamin D levels in their blood, and the worse their kidney function, the lower their vitamin D levels tend to be.
Taking dietary supplements restores missing micronutrients from inadequate food intake and maintains normal bodily functions.
In people with type 2 diabetes and early kidney disease, those with higher levels of vitamin D-binding protein in their blood at the start of treatment are less likely to reach healthy vitamin D levels after three months of taking vitamin D supplements.
In people with type 2 diabetes, higher levels of vitamin D-binding protein in the blood are consistently observed as kidney function worsens, with measurable increases from 93.6 ng/mL to 132.8 ng/mL as eGFR declines from ≥90 to 30–60 mL/min/1.73m².
In people with type 2 diabetes and kidney disease, taking 4000 IU of vitamin D daily for three months raises blood levels of vitamin D from 12.1 ng/mL to 34.5 ng/mL.