What is the role of glycogen in the human body?

Glycogen serves a crucial role in the human body as a form of energy storage. It is a polysaccharide composed of glucose molecules and is primarily found in the liver and muscle tissues. When the body needs energy, particularly during periods of physical activity or when blood glucose levels drop, glycogen can be quickly broken down into glucose and released into the bloodstream. This glucose is then used by cells for energy, supporting activities ranging from exercise to basic metabolic functions.

The understanding of glycogen’s role in energy storage is significant because it highlights the importance of carbohydrates in the diet, as they are the primary source of glucose that gets stored as glycogen. Adequate glycogen stores are essential for maintaining performance during prolonged activities and supporting overall energy levels throughout the day.