Can smoking cause tonsillitis?

Yes, smoking can increase your risk of tonsillitis. Studies have shown that smokers are three times more likely to develop tonsillitis than nonsmokers. Smoking causes inflammation of the mucous membranes in the throat and mouth, which can lead to infection. This can result in a sore throat or even irritation and swelling of the tonsils. In severe cases, this could cause inflammation of the adenoids as well—the small glands located behind your nose and throat where most infections originate from. Additionally, smoking weakens the immune system's ability to fight off infection due to decreased levels of oxygen-carrying red blood cells in smokers—and this too increases your risk for developing tonsillitis or other respiratory illnesses like bronchitis or pneumonia.

It is important to remember that quitting smoking can reduce your chances significantly in getting infected with tonsillitis, so if you are a smoker it's best to take steps towards quitting immediately!