cigarettes switch Smokers who to vaping see improved respiratory health King & Lords Double Switch

There are notable differences between smokers v/s normal lungs: Colour: A normal lung is pink in colour, whereas a smokers lung appears grey or black

7 However, decreased CYP2A6 activity may influence smoking and carcinogen exposure in any smoker, and the relationship of nicotine metabolism and CYP2A6 genotype to the lung cancer risk of smokers of European descent was recently established in the Transdisciplinary Research in Cancer of the Lung consortium genome-wide association study data set

Meernik C, Ranney LM, Lazard AJ, Kim K, Queen TL, Avishai A, et al

The New England Journal of Medicine, 371(10), 932943) (Khaled, S

"Health Warnings/Messages Features Packing/Labelling Tobacco Control Laws South Africa"