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Glucose

Overview

Glucose is the monosaccharide in free sugar, in starch after digestion, and in blood. This page records one experimental use of it: luminal glucose as a signal in a gut-to-brain nerve circuit. It is not a recommendation to increase glucose or sugar intake.

In mice, enteroendocrine neuropod cells sensed luminal glucose and used a glutamate synapse to signal rapidly to vagal neurons [1]. That shows glucose can be a sensory stimulus in the circuit that was tested. It does not set an optimal intake, an inadequacy threshold, or a benefit from eating more sugar [1].

Dietary Origin

Dietary glucose arrives as the sugar itself, or from digestible carbohydrate that yields glucose. The nerve result used glucose applied in a mouse experiment as a luminal stimulus [1]. A food that contains starch or sugar is not that experiment. No food page is linked from this result, because composition would not carry the neural finding.

Research Spotlights & Evidence Checks

🔎 Evidence Check · isolated-substance

Does the mouse glucose-sensing result mean people should eat more glucose?

No. Luminal glucose triggered a neuropod–vagal response in mice. That is a sensory experiment, not an intake target [1].

Read the evidence

Neuropod cells transduced a nutrient stimulus into a rapid vagal signal, and the transmitter of that synapse was glutamate [1]. Glucose was the luminal stimulus in the test. The paper does not estimate a human dose, and it does not show that adding sugar improves the circuit or any clinical outcome [1].

Recipes

no recipes found (no foods contain this substance)

Foods

no foods found

Biological Regulatory Systems

Biological Regulatory System	Evidence-qualified relationship	Evidence
Gut-Brain Axis & Enteric Nervous System (BRS5)	Luminal glucose was the sensory stimulus in the mouse neuropod–vagal circuit mapped to vagal–ENS signalling. The response is not a recommendation to increase glucose.	[1]

References

[1] Kaelberer et al. (2018). A gut-brain neural circuit for nutrient sensory transduction. Mouse neuropod cells sensed luminal glucose and signalled rapidly to vagal neurons. Experimental neural response, not an optimal intake or a benefit from more sugar.