The Claim
In healthy adult humans, insulin enhances vasodilatory responses to methacholine, a nitric oxide-dependent endothelial agonist, but does not enhance responses to sodium nitroprusside, an endothelium-independent nitric oxide donor, suggesting that insulin potentiates endothelial nitric oxide synthesis or release rather than increasing vascular smooth muscle sensitivity to nitric oxide.
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.
Insulin helps blood vessels relax better when the signal comes from the vessel lining, but not when the signal bypasses it—meaning insulin probably boosts the lining's ability to release a blood-vessel-relaxing chemical called nitric oxide.
See the scientific wording
In healthy adult humans, insulin enhances vasodilatory responses to methacholine—a nitric oxide-dependent endothelial agonist—but not to sodium nitroprusside, an endothelium-independent nitric oxide donor, indicating that insulin potentiates endothelial nitric oxide synthesis or release rather than increasing vascular smooth muscle sensitivity to nitric oxide.
What the research says
1 studyThe study shows that insulin makes blood vessels respond better to a signal that tells them to relax using the body's natural nitric oxide system, but doesn’t make them more sensitive to the relaxing chemical itself, which supports the idea that insulin boosts the body’s ability to produce nitric oxide.
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.