cigarette tour de france Cyclists at in the 1920s smoking cigarettes. It was thought smoking expanded the lungs and helped with endurance. : r/bicycling Tour de France Cyclists Smoking

The toxic elements also leach into soil and water

The stains have permeated deeply into the enamel and frequently even reach the dentins outer layer

[PMC free article: PMC5773841] [PubMed: 29182497] Incidence and Mortality Oral cavity and oropharynx cancers From 2017 to 2021, the estimated age-adjusted incidence rate for cancers of the oral cavity and oropharynx in the United States was 11.5 cases per 100,000 persons per year.[1] Cancers of the tongue, oropharynx, and tonsil comprise the majority of cases (30% tongue and 24% oropharynx and tonsil)

I walked two miles then climbed three flights of stairs, but when I finally sat down to light up I felt like I was dying