Cancer may occur sporadically or may have a genetic predisposition. However, environmental risk factors also play a pivotal role. Following cancers are strongly associated with smoking: - lung cancer - laryngeal carcinoma - oral cancer - esophageal carcinoma - bladder carcinoma - renal cancer - liver cancer - stomach cancer - pancreatic carcinoma - colon cancer - cervical cancer - acute myeloid leukemia - rectal cancer Reference: https://www.cancer.gov/about-cancer/causes-prevention/risk/tobacco#:~:text=Tobacco%20use%20causes%20many%20types Image via: https://www.cureus.com/articles/65563-tongue-cancer-in-a-young-male