Third-hand Smoke Ups Lung Cancer Risk in Mice

Exposure to third-hand smoke in early childhood may increase risk of lung cancer, revealed new study. Thirdhand smoke is a kind of toxic residue that lingers on indoor surfaces and in dust long after a cigarette has been extinguished, which was already regarded as a health hazard nearly 10 years ago. The study conducted on mice showed an increased incidence of lung cancer, larger tumours and a greater number of tumours, compared with control mice. Exposure to thirdhand smoke can occur ...