The Claim
In adult male rats, insulin infusion at a rate of 3 mU/kg/min during a euglycemic clamp significantly increases hindlimb muscle microvascular perfusion within 30 minutes and maintains this increase for at least 120 minutes in chow-fed animals, but this effect is absent in high-fat diet–fed rats, suggesting that a high-fat diet impairs insulin's ability to enhance microvascular perfusion in skeletal muscle.
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 male rats, insulin helps blood flow to leg muscles pretty quickly—but only if they're eating regular food. If they're on a high-fat diet, insulin doesn't do this job well anymore.
See the scientific wording
In adult male rats, insulin infusion at 3 mU/kg/min during a euglycemic clamp significantly enhances hindlimb muscle microvascular perfusion within 30 minutes and sustains this effect for at least 120 minutes in chow-fed animals, but not in high-fat diet–fed rats, indicating diet-induced impairment of insulin’s microvascular action.
What the research says
1 studyStudy: 109-OR: GIP Acutely Blunts Insulin- and GLP-1–Induced Muscle Microvascular Perfusion
The study shows that insulin improves blood flow in leg muscles of healthy rats but not in rats fed a high-fat diet, which matches the claim exactly.
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.