Your lymphatic system filters waste, runs your immune defense and has no pump. Here's what doctors say keeps it moving.

The lymph nodes are small, round organs that are part of the immune system. Your lymph nodes live in different areas of the body. Their primary function is to store and produce white blood cells that ...

NBC Select independently determines what we cover and recommend. When you click on or buy through our links, we earn a commission. Learn more. Bethany Heitman Contributing Editor We don’t always have ...