Because all tobacco products are harmful and cause cancer, the use of all tobacco products is strongly discouraged
Once its gone, its gone. Damage to alveoli gets worse over time, too
Thats around 60 (inhaled) cigarettes
Tobacco carcinogen-metabolizing genes CYP1A1, GSTM1, and GSTT1 polymorphisms and their interaction with tobacco exposure influence the risk of head and neck cancer in Northeast Indian population
Recurring Sinusitis
Certain medical conditions and medications increase risk, including hypothyroidism, obstructive sleep apnoea, hypopituitarism, and medications such as corticosteroids, tamoxifen, amiodarone, valproate, and some antiretroviral drugs (though medication-induced steatosis is less common)