Body & HealthHow it works
How your blood sugar stays stable whatever you eat.
Your blood carries only about 4 to 5 grams of sugar, a teaspoon. When the level rises after a meal, beta cells in the pancreas release insulin. It opens muscle and fat cells to glucose and tells the liver to store sugar as glycogen. When the level falls, glucagon makes the liver release sugar again. Target: around 4 to 6 millimoles per litre.
Useful: Insulin isn't a villain; it is the key without which sugar can't enter cells.
Source: en.wikipedia.org