vagus nerve
insulin
blood sugar
You Release Insulin Before Food Even Reaches Your Stomach — Thank the Vagus
The sight and smell of a meal triggers a pulse of insulin before a single molecule of glucose is absorbed. Your vagus nerve is literally predicting the food and prepping your body for it. When vagal tone is low, that anticipation is blunted — and blood sugar pays the price.
By VagusSkool Team
Jul 22, 2026