The Claim
Chronically elevated blood glucose causes diabetic retinopathy by inducing toxicity in retinal capillaries, resulting in vascular leakage, abnormal proliferation, and occlusion.
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.
Persistently high blood glucose levels damage the small blood vessels in the retina, leading to leakage, abnormal growth of blood vessels, and blockages.
See the scientific wording
Chronically elevated blood glucose causes diabetic retinopathy by inducing toxicity in retinal capillaries, resulting in vascular leakage, abnormal proliferation, and occlusion.
High blood sugar over time causes retinal blood vessels to produce too many harmful molecules, which damage the cells lining the vessels, break their tight seals, trigger swelling, and force the growth of abnormal new blood vessels that leak and block blood flow.
What the research says
2 studiesPeople with consistently high blood sugar were over 4 times more likely to develop eye damage over time, even when other factors were considered — showing that high blood sugar directly harms the tiny blood vessels in the eye.
Study: Diabetic retinopathy
High blood sugar over time damages the tiny blood vessels in the eye, causing leaks, weird new blood vessels, and eventually vision loss — and keeping blood sugar under control helps prevent this.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 2 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.