A small bean-shaped structure that is part of the body's immune system. Lymph nodes filter substances that travel through the lymphatic fluid, and they contain lymphocytes (white blood cells) that help the body fight infection and disease. There are hundreds of lymph nodes found throughout the body.

Are lymph nodes good or bad?

Since lymph nodes store the white blood cells that are our first line of defense against infection, they are often enlarged due to infections. 19 Enlargement of lymph nodes with an infection can be good or bad. It is good in the sense that they are the powerhouses storing immune cells.

Where are your lymph nodes located?

Lymph nodes are located throughout the body, including the neck, armpits, groin, around the gut, and between the lungs. Lymph nodes drain lymph fluid from nearby organs or areas of the body.