What role does the hormone insulin play in the body?

Insulin is a crucial hormone produced by the pancreas that plays a significant role in the regulation of blood glucose levels. Its primary function is to help lower blood glucose levels after meals. When we consume food, carbohydrates are broken down into glucose, which enters the bloodstream. In response to rising glucose levels, the pancreas secretes insulin.

Insulin facilitates the uptake of glucose into cells, where it can be used for energy or stored for future use. This process not only reduces the concentration of glucose in the blood but also helps to maintain homeostasis, which is essential for overall health.

In contrast, other hormones involved in glucose metabolism, such as glucagon, work to increase blood glucose levels, while insulin does the opposite. Therefore, the correct understanding of insulin's role is that it decreases blood glucose levels after meals, supporting metabolic balance in the body.