What is the purpose of the tonsils?

The tonsils are part of the lymphatic system and play a crucial role in the body’s immune response. Their primary purpose is to help fight infection, specifically during the first lines of defense against pathogens that enter the body through the mouth and nose. The tonsils contain lymphocytes, which are white blood cells that identify and help eliminate harmful microorganisms. By trapping bacteria and viruses, tonsils help to prevent infections in the upper respiratory system and oral cavity. This role is particularly active in children, as their immune systems are still developing and the tonsils can help in building immunity through exposure to pathogens.