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The immune system is the body's natural defence system that helps fight infections. An impaired immune system does not work properly and can't effectively protect a person against infection.
Some conditions and medicines weaken or impair the immune system. These may include:
Current as of: July 30, 2018
Author: Healthwise Staff
Medical Review:E. Gregory Thompson, MD - Internal Medicine & Brian O'Brien, MD, FRCPC - Internal Medicine & Adam Husney, MD - Family Medicine & Peter Shalit, MD, PhD - Internal Medicine, Infectious Disease & Elizabeth T. Russo, MD - Internal Medicine
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