If you or someone you know is experiencing a mental health crisis, call 988 for 24/7 free and confidential crisis support. You do not have to be suicidal to call. Access more info and resources on suicide prevention, emotional and mental health support.
Search by keyword or browse our list of services.
Find a provider by specialty, location, or availability.
Available seven days a week from 8 a.m. to 8 p.m.
See current studies testing new drugs, devices, and equipment to find better ways to treat and help patients.
For life-threatening emergencies, call 911 without delay.
Search by specialty and location.
Receive the highest level of care from the region's leading providers.
Find a lab or imaging facility close to you.
Search for a retail pharmacy in your area.
Find an outpatient infusion center.
Visit us to pay bills, ask billing questions, or request billing records.
MyChart
The immune system is the body's natural defense system that helps fight infections. The immune system is made up of antibodies, white blood cells, and other chemicals and proteins that attack and destroy substances such as bacteria and viruses that they recognize as foreign and different from the body's normal healthy tissues.
The immune system is also responsible for allergic reactions and allergies, which may occur when the immune system incorrectly identifies a substance (allergen), such as pollen, mold, chemicals, plants, and medicines, as harmful.
Sometimes the immune system also mistakenly attacks the body's own cells, which is known as an autoimmune disease.
Current as of: September 25, 2023
Author: Healthwise Staff
Clinical Review Board
All Healthwise education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Healthwise is a URAC accredited health web site content provider. Privacy Policy. How this information was developed to help you make better health decisions.
To learn more, visit Healthwise.org
© 1995- Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
People are at the heart of great health care. That's why we are committed to delivering compassionate, high-quality care tailored to the communities we serve.
Together with our community partners and patients, we're building a stronger, healthier future for all Idahoans.
