Environmental hazards that decimate the immune system

There are environmental hazards that wreak havoc on our immune systems. They inhibit the modules of the immune system from proper communications and functionality so that the immune system cannot perform its important work of protecting our bodies from viruses, bacteria, funguses, protozoa, wounds, and criticism.

Environmental hazards can be the most severe disrupters of immune system functionality. Here are some types of environmental hazards that cause trouble (in no particular order):

house...