Understanding Lung Cancer Screening in Canada: A Crucial but Confusing Process

Lung cancer is a leading cause of cancer deaths in Canada, with thousands of Canadians wondering if they should get screened every year. Unlike other organized cancer screening programs, lung cancer screening works differently, requiring individuals to self-assess their risk and take two distinct steps to determine eligibility. Dr. Jessica Moffatt, Vice-President of Programs & Public Affairs at the Lung Health Foundation, emphasizes the importance of understanding eligibility criteria and the screening process to ensure early detection and treatment.

Key Takeaways:

• To qualify for lung cancer screening, individuals must be between 55-80 years-old in Ontario, or between 55-74 years-old in British Columbia and Nova Scotia, have smoked cigarettes daily for at least 20 years, and have no current symptoms of lung cancer.
• The screening process involves two steps: a risk assessment and qualifying for screening. A screening navigator will determine eligibility based on a risk assessment calculator score.
• Screening is only for individuals who do not have symptoms of lung cancer. Those with symptoms require diagnostic testing immediately.
• Provincial programs vary in implementation, with Ontario, British Columbia, and Nova Scotia having organized programs, and several other provinces piloting or planning rollouts.

Statistics:

• About half of all lung cancers in Canada are diagnosed at stage 4, when treatment options are limited.
• Early detection through screening can lead to more successful treatment options, which may include minor surgery followed by a short course of chemotherapy.
• National registry data from 2019 shows that early detection matters, and each day counts in the fight against lung cancer.

Sources:

• Lung Health Foundation
• Dr. Jessica Moffatt, Vice-President of Programs & Public Affairs at the Lung Health Foundation
• About Lung Health Foundation (LHF)
• Globe Newswire - October 30, 2025