Can smoking cause swollen lymph nodes in the neck?

While smoking is a well-known risk factor for various health issues, it is not directly associated with causing swollen lymph nodes in the neck. Swollen lymph nodes, also known as lymphadenopathy, can have several causes, including infections, immune system disorders, and certain medical conditions. Smoking, on the other hand, primarily affects the respiratory system and can lead to respiratory diseases such as chronic obstructive pulmonary disease (COPD), lung cancer, and other respiratory infections.