what are insulin and blood gucose

when you eat, different foods are cut down into glucose in your gut and this glucose passes through gut wall into your blood.when the level of glucose rises in your blood, the level of insulin should also follow it.some of glucose is converted into energy and some is converted into glycogen or fat. between the meals when the level of insulin drops, some glycogen or fat is converted back into glucose to join the blood stream. insulin is a hormone , and is produce by beta cells in your body