When insulin goes up after eating carbs, it lines up with bigger blood flow to muscles, looser blood vessels, and more nerve signals telling vessels to tighten—suggesting insulin might be linked to all these changes happening together.

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Evidence from Studies

Supporting (1)

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Carbohydrate ingestion, with transient endogenous insulinaemia, produces both sympathetic activation and vasodilatation in normal humans.

Cross-Sectional Study

Human

2002 May

When people eat carbs, their body releases insulin, and this study shows that insulin makes blood vessels in the muscles open up more, increases nerve signals that control blood pressure, and still lets more blood flow through—despite those nerve signals usually making vessels tighten.

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No contradicting evidence found

Source Study

Carbohydrate ingestion, with transient endogenous insulinaemia, produces both sympathetic activation and vasodilatation in normal humans.

Score: 37

DOI: 10.1042/CS1020523

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