cigarettes cause lung cancer tobacco causes Lung cancer is by far the most common malignant tumor originating in Smoking causes lung cancer -

Theorell et al., Effects of Oral Supplementation of Coenzyme Q10 on 31P-NMR Detected Skeletal Muscle Energy Metabolism in Middle-aged Post-polio Subjects and Normal Volunteers, Molecular Aspects of Medicine, 1997;18 supplement:S291 S298

So it matters little if cigarettes, once labelled as light, have less nicotine and tar than stronger cigarettes, a more powerful filter or a different tobacco blend: inhaling the smoke generated by burning tobacco and paper means introducing carbon monoxide and other harmful substances into the body

When co-applied with PNU-120596, a positive allosteric modulator (PAM), the coffees stimulated currents from cells expressing 7 nAChR that were larger than ACh controls

IARC monographs on the evaluation of the carcinogenic risk of chemicals to humans, vol 19