How do antibodies maintain homeostasis?

Antibodies are released into the bloodstream and attached themselves to foreign antigens such as toxins, bacteria and foreign cells. The attachment of an antibody to an antigen marks the pair for destruction.
This helps maintain homeostasis by providing the body protection against disease and infection.

Iwould say overuse ( but not 100% sure ) in the u.s. we tend to overuse water by leaving it running, throwing it away, taking long showers, etc.