Insulin is a hormone, a messenger made by the body. Its job is to help glucose move from your blood into your cells.

A key for every cell

Your body is made of billions of tiny cells, and they all need energy. Insulin opens their doors so glucose can get inside and be used as fuel.

When the pancreas can't make it

Kids with type 1 diabetes get insulin with a pen, a syringe or a pump. Some insulin works quietly in the background all day, and some is taken for meals.

• Pen: like a big marker with a tiny needle
• Pump: a small device that gives insulin through a thin tube or a patch
• Insulin can't be swallowed as a pill, because the tummy would digest it

💡 Changing the spot for each injection (tummy, arms, legs, bottom) keeps the skin healthy.

Sources

• American Diabetes Association: Type 1 diabetes
• NHS: Type 1 diabetes
• AJD, Aide aux Jeunes Diabétiques

Last checked 20 October 2026.