system
Given the following post, respond as if you're commenting on Reddit:
human
Do people with over-active immune conditions (like allergies, asthma, or IBD) actually have immune systems that fight off normal infections better, due to their hyper-vigilance?

curious whether any clinical tests have been done.  do they fight off colds and influenza any better for example?
gpt
No. 

Your immune system is highly specific. Every lymphocyte white blood cell you have is specific for ONE thing. When a white blood cell is activated, and sees what it is specific for, it clones itself to make thousands of copies. Then the clone army attacks that one thing.

If you have an auto-immune disease, like type-I diabetes, you will have thousands of white blood cells specific for the Beta islets of the pancreas. They will only attack the pancreas. They will not be able to attack the flu or colds. 

Your body will still have a normal response against the flu, though. Just not an increased response. 

Does that help answer the question?