Top of the page
The immune system is your body's natural defense system. It helps fight infections.
Your immune system is made up of antibodies, white blood cells, lymph nodes and vessels, and other chemicals and proteins.
The parts of the immune system work together to protect your body. They attack and destroy substances that are foreign to your body, such as bacteria and viruses.
Immunity is how well you are protected from a disease. You may be born with short-term protection from certain diseases. Or you may be protected after you get an infection or a vaccine.
A vaccine helps your immune system make antibodies to fight a disease. Those antibodies will then fight the disease if you're exposed to it in the future. This helps keep you from getting sick. Or you may not get as sick.
Your immune system can cause:
You may be able to help your immune system by having a healthy lifestyle. Make sure to:
Go to https://www.healthwise.net/patientEd
Enter C673 in the search box to learn more about "Learning About Your Immune System".
Current as of: July 30, 2018
Author: Healthwise Staff
Medical Review:Adam Husney, MD - Family Medicine & Elizabeth T. Russo, MD - Internal Medicine
Care instructions adapted under license by your healthcare professional. If you have questions about a medical condition or this instruction, always ask your healthcare professional. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.
©2006-2019 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.