When you eat carbohydrates, your body breaks them down into sugar.Then the sugar goes into your blood .Your cells use some of the sugar for energy .The extra sugar goes to your liver, where it is stored for later.
Your pancreas is under your stomach and it makes a special chemical called insulin. Insulin lets your cells take sugar from your blood. People with diabetes have to be careful about what they eat, and sometimes they have to check how much sugar is in their blood . Some people also need insulin injections to control the amount of sugar in their blood.
Guide to type 1 diabetes