What controls blood sugar levels in the body and how does it regulate them?

Blood sugar levels in the body are controlled by the hormone insulin, which is produced by the pancreas. Insulin helps regulate blood sugar levels by allowing cells to absorb glucose from the bloodstream for energy or storage. When blood sugar levels are high, insulin is released to lower them by promoting the uptake of glucose by cells. Conversely, when blood sugar levels are low, another hormone called glucagon is released to stimulate the liver to release stored glucose into the bloodstream. This delicate balance of insulin and glucagon helps maintain stable blood sugar levels in the body.