does natural tobacco have carcinogens Carcinogenicity of nicotine and signal pathways in cancer progression: a review | Environmental Chemistry Letters Health Effects of Cigarettes: Cancer

Geneva: WHO, (3 Jun 2015)

Determination of Chemical Compounds Generated from Second-generation E-cigarettes Using a Sorbent Cartridge Followed by a Two-step Elution Method

Lucky Strike famously refused to put a filter on their main product (they still dont to this day), so a lucky cigarette became a cigarette with no filter

Smoking can cause long term damage to nearly every organ in the body and is a big contributor to many life-threatening conditions such as cancer, heart disease, strokes, and chronic respiratory illnesses

Risks vary depending on nicotine levels and other toxins

Risk factors for ectopic pregnancy in a population of Cameroonian women: a case-control study