How smoking changes lung tissue to create the right setting for cancer growth

Healthy human tissue often carries gene changes that can drive cancer, but the tissue itself does not always form tumours. Oncologists note that a genetic spark alone is not enough to cause the disease. At the same time, long-term inflammation from smoking causes deep damage to lung tissue long before any definitive cancer-causing changes even take root.

Context

Smoking is a major public health concern linked to various serious medical conditions, particularly lung cancer. Understanding how smoke affects the body at a cellular level helps researchers see why prevention and quitting remain crucial steps for health.