is tobacco harmful to the body Cigarette smoking can cause 12 types of cancer, heart disease, lung disease, and other diseases. Protect your and improve your health by quitting smoking. Visit Quit Your Way link in How does smoking cause cancer?

Combustible tobacco use (i.e., smoking) is extremely hazardous to human health and is responsible for more than 90% of tobacco-attributable death and disease, despite efforts by the tobacco industry to market safer-sounding alternatives such as low-tar cigarettes and waterpipes

They did it entirely on their own![1] Who to Believe But don't trust the ACS's 2003 Cancer Facts & Figures report indicating that cold turkey is by far the most productive form of quitting on earth.[1] Don't trust a May 2006 Australian study which followed the smoking patients of 1,000 family practice physicians and found that cold turkey accounted for 1,942 of 2,207 successful former smokers, a whopping 88% of all success stories

Solanitol, the degradation product of cembranes compounds, is an important flavor component in tobacco leaves

Those initial investigations were followed by others at The Wistar Institute and Penn Vet, in which viruses, less-pathogenic than SARS-CoV-2, were modified to express the SARS-CoV-2 spike protein