Tonsils are part of the bodys immune system and play a key role in our overall health. They are located at the back of the throat and palate, forming a ring around the opening to the throat from the mouth and nose, which allows them to prevent germs like viruses or bacteria from entering the body through the mouth or the nose. The tonsils contain a lot of white blood cells, which are responsible for killing germs. There are different types of tonsils, including the palatine tonsils, adenoids, and lingual tonsil. The main function of tonsils is to fight infection by trapping germs that enter the body through the nose or mouth. Antibodies produced by the immune cells in the tonsils help to kill germs and prevent throat and lung infections. Although tonsils and adenoids may help to prevent infection, they are not considered to be very important, and the body has other means of preventing infection and fighting off bacteria and viruses. In some cases, tonsils can become inflamed, known as tonsillitis, which makes them swell up and turn very red. Treatment for inflamed or infected tonsils depends on the underlying cause, and it may include antibiotics, drainage of an abscess, or tonsillectomy.