Glucose comes from food, particularly from starchy and sugary
food. It is a carbohydrate.
Digestion turns sugar and starch into glucose which goes into
your blood.
The pancreas is a gland in your body which makes insulin.
Insulin allows glucose in your blood to move into your muscles
where it can be used to make energy.
Without insulin your body cannot use the glucose so it stays
in your blood.
When you have diabetes you do not make enough insulin. That
is why your blood glucose is high.
(Blood glucose and blood
sugar are the same thing.)
