The organ that produces glucose in the human body is the liver.

Here's how it works:

* Glycogenolysis: When blood sugar levels drop, the liver breaks down stored glycogen (a complex carbohydrate) into glucose and releases it into the bloodstream.

* Gluconeogenesis: The liver can also create glucose from non-carbohydrate sources, like amino acids and glycerol, through a process called gluconeogenesis. This is especially important during fasting or prolonged exercise.

While the liver is the primary producer of glucose, other organs like the kidneys can also contribute to glucose production in certain circumstances.