cigarette pack-year calculation Jamaica - How to calculate pack years and why it's important to know this information. https://ow.ly/sj8m50SCIpU #LungCancer #LungCancerScreening #QuitSmoking What is a “Pack Year”?

Not for actual use

One of the first observations in chronic disease epidemiology was the strong relation between smoking and lung cancer death (fig 1 (top)).14 Yet a 2001 study of CT population screening in Japan found little relation between smoking and lung cancer detection (fig 1 (bottom)).15 Why would smoking be so strongly associated with lung cancer death, yet so weakly related to lung cancer detection using CT

This could help the immune system mount a stronger anti-cancer response, especially in smokers

Reduced airflow: It feels blocked or tight

Smoking damages the lungs and puts a strain on the immune system