The Spleen: An Overlooked Immune Powerhouse

The spleen filters blood, removing old cells and stray microbes.
It stores a reserve army of white blood cells ready for action.
Your spleen also helps recycle iron from worn-out red cells.
It’s like a quality-control station for your bloodstream.
During infections, it ramps up production of immune cells.
You can live without it, but immunity becomes less efficient.
It monitors blood directly, not lymph, giving a broader defense view.
Injuries to the spleen can be serious because of its rich blood supply.
In children, it plays an even bigger immune training role.
Though silent and hidden, it’s a key command post in your defenses.