After eating carbs, scientists measured changes in blood flow and nerve signals in the lower leg using special tools, and saw all the changes happen within two hours.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

37

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

Cross-Sectional Study

Human

2002 May

After eating carbs, the body releases insulin, which makes blood vessels in the leg widen to help absorb sugar, even though the nervous system also tries to tighten them—this study measured both effects in the calf within 2 hours.

Contradicting (0)

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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

Similar Assertions

After eating carbs, the body turns up the 'stress signal' to blood vessels, but the vessels still open up instead of tightening—meaning the body’s normal 'squeeze' signal isn’t strong enough to block the opening.

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