Which hormone regulates blood sugar levels?

Insulin is the hormone primarily responsible for regulating blood sugar levels in the body. It is produced by the beta cells of the pancreas and plays a critical role in glucose metabolism. When blood sugar levels rise after eating, insulin is secreted to facilitate the uptake of glucose into cells, where it can be used for energy or stored for later use. This action helps to lower blood sugar levels back to a normal range.

The body requires insulin to ensure that cells receive adequate energy, making it vital not only for maintaining blood sugar balance but also for overall metabolic health. In conditions such as diabetes, where insulin production or action is impaired, blood sugar levels can become dangerously high, leading to various health complications.