2 packs of cigarettes a day for 20 years How Many Do You Need to Smoke to Get Cancer? An incredible public health advance':

INSIDE SPACE: Single compartment measuring 3.35" x 2.17" x 0.79"; Perfect for storing pills, treats, or even locking away the key to your kitchen cabinet where you keep snacks, medication, alcohol, and more; IMPORTANT: Don't fit any smartphone

Respiratory system: Smoking tobacco products, such as cigarettes, can severely damage the respiratory system

The highest mutation rates were seen in the lung cancers but tumors in other parts of the body also contained these smoking-associated mutations, explaining how smoking causes many types of human cancer, reports Science Daily

Through the 1930s and 1940s, Marlboro remained a narrow product with modest sales and limited market influence