What is the primary function of insulin in the body?

The primary function of insulin in the body is to carry glucose into the cells for energy. Insulin, a hormone produced by the pancreas, plays a crucial role in glucose metabolism. When you eat, carbohydrates are broken down into glucose, which is released into the bloodstream. Insulin facilitates the uptake of this glucose by cells, allowing it to be utilized for energy. Without sufficient insulin or response to insulin, glucose remains in the bloodstream, leading to elevated blood sugar levels, which can be harmful over time.

Additionally, while other options mention important functions in the body, they do not define the primary role of insulin. For instance, increasing blood sugar levels is the opposite of what insulin does; insulin actually works to lower blood sugar post-meal. Regulating water balance and stimulating digestive enzymes are also vital bodily functions but are not associated with insulin’s primary role in glucose metabolism. Understanding this central function is essential for comprehending insulin’s impact on overall health and how it relates to conditions like diabetes.