Adults aged 50 to 80 with a 20 “pack-year” lifetime history of smoking should get a yearly low-dose CT scan if they smoked within the last 15 years, says the U.S. Preventive Services Task Force.

One pack-year is equal to smoking an average of 1 pack (20 cigarettes) a day for a year.

What to do

Meet the criteria? Get screened. It’s been proven to save lives. For more info, go to