If you're constantly battling colds, your spleen could be the hidden reason. Discover how this organ affects your immune ...

Don't worry about it. Check this out. The spleen's that soft, purple organ located right behind the stomach and under the lungs. It's about five inches wide and weighs about six ounces.

Contrary to established dogma, the spleen is not the principal source of the pro-inflammatory cytokine called tumor necrosis factor (TNF), which drives the sort of system-wide inflammation seen in ...