The Claim
Serum vitamin D-binding protein (VDBP) levels increase progressively with declining kidney function in patients with type 2 diabetes, rising from a median of 93.6 ng/mL in those with preserved eGFR (≥90 mL/min/1.73m²) to 132.8 ng/mL in those with moderate impairment (eGFR 30–60 mL/min/1.73m²), indicating VDBP is a biomarker associated with diabetic kidney disease progression.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
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.
See the scientific wording
Serum vitamin D-binding protein (VDBP) levels increase progressively with declining kidney function in patients with type 2 diabetes, rising from a median of 93.6 ng/mL in those with preserved eGFR (≥90 mL/min/1.73m²) to 132.8 ng/mL in those with moderate impairment (eGFR 30–60 mL/min/1.73m²), indicating VDBP is a biomarker associated with diabetic kidney disease progression.
When the kidneys fail, they can no longer filter out vitamin D-binding protein effectively, so it builds up in the blood. At the same time, low calcium and low active vitamin D signal the liver to make more of this protein, which traps vitamin D and prevents it from working properly. This causes more vitamin D-binding protein to accumulate as kidney damage gets worse.
What the research says
1 studyIn people with type 2 diabetes, this study found that as their kidneys get worse, a blood protein called VDBP goes up — exactly what the claim says. This means VDBP could help doctors track how bad the kidney damage is.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.