Insulin Injections Say: in-suh-lin in-jek-shuns Insulin is an important hormone that keeps your body working. If a person doesn't make enough of this substance, he or she may need to get insulin injections, or shots. There are many types of injectable insulin, both short- and long-acting. Most people with diabetes take insulin injections based on their blood glucose levels, according to a plan that they've worked out with their doctor. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.