Why do we have adenoids?

Dear Dr. Cory

Why do we have adenoids? I got mine taken out last year and was wondering what they were used for. Sarah Ness Oakes, North Dakota

Dear Sarah,

Adenoids and tonsils are special glands in the throat. They protect us from viruses and bacteria that enter the body through the nose and mouth.

When tonsils and adenoids are fighting infections, they get larger. When the infection is gone, the glands get small again.

Sometimes, the adenoids and tonsils themselves get infected. This makes them swell and hurt. The pain and swelling can make it harder for you to eat and breathe. It may even cause ear infections.

Doctors use medicines called antibiotics to keep the adenoids and tonsils from getting infected so often. When this no longer works, the adenoids or tonsils are removed to keep you healthy.