chewing tobacco does not cause cancer Smokeless products like dip, chew, and oral nicotine pouches contain added nicotine, lead, arsenic, formaldehyde, and other cancer- causing chemicals. Try quitting with free support from the SC Tobacco Quitline (1-800-QUIT-NOW). Veterans Chewing Tobacco Invites Cancer -
Description
The mechanisms include inactivation and reduced bioavailability of nitric oxide

In parallel, combined prenatal use of cannabis and nicotine is also increasing, but little is known about the combined impact of both substances on pregnancy and offspring outcomes compared with each substance alone

It would be difficult to say that these are safer than other tobacco products on the market

Olmedo P, Goessler W, Tanda S, Grau-Perez M, Jarmul S, Aherrera A, Chen R, Hilpert M, Cohen JE, Navas-Acien A, Rule AM (2018) Metal concentrations in e-cigarette liquid and aerosol samples: the contribution of metallic coils
Then Refocus Rehab Melbourne is the answer

PMid:24342102