How insulin makes energy Diabetes Home Insulin How do you take insulin? How insulin makes energy Taking insulin Insulin is the key. You eat lots of different food. There are sugar and carbs in your food. Your body needs the sugar from your food. You eat food with sugar and carbs in it. Your body moves the sugar to your blood. Now. There is lots of sugar in your blood Insulin is the key. It unlocks the sugar in your blood. Insulin turns the sugar in to energy. This happens in your body every time you eat. But Insulin does not work the right way for some people. They may have diabetes. Back Diabetes Home Next This is general information. Talk to your doctor for information made for you.