The complement system is like a built-in security alarm in the body. It’s made up of proteins that float around in your blood, always on standby.
When a real germ (like a bacterium) shows up, the complement system usually:
Tag the germ so other immune cells can notice it.
Punch holes in it to kill it directly or..
Call in reinforcements by creating inflammation to attract more immune cells.
Typically, the complement system serves as a valuable backup to the immune system. However, sometimes it becomes confused and overreacts, which causes various symptoms, including allergies and inflammation.
