Sinus polyps can occur at any age. However, they are most commonly diagnosed in adults over the age of 40. Children and teenagers are less frequently affected (although it’s not unheard of for them to develop polyps).
Other factors can also increase your chances of being diagnosed with nasal polyps. For example, they are more common in those with a history of allergies, asthma, recurrent sinus infections, and certain genetic conditions like cystic fibrosis. They are also 1.5 times more prevalent in men than women.